Since I'm in WFH existential torpor and I have the internet I'm going to expand on this thought:
FWIW I think Murray "should" be on about 6 or 7 slams. I very much put him alongside Edberg and Becker when it comes to overall "greatness" since outside of slam final results his career matches up pretty closely to theirs and I don't see Becker winning Wimbledon in 93-2000 with Sampras around, for example, unless he was the eventual benefactor of the 96 QF surprise.
Direct comparisons over eras are never entirely accurate - the Masters now don't map exactly to the Grand Prix Super Series stuff of the late 70s-late 80s - and Becker and Edberg skipped a load of them (mostly on clay, mind), but here goes anyway:
Overall titles:
Becker 49 (lost 28 finals)
Murray 46 (lost 22 finals)
Edberg 41 (lost 36 finals)
Slams:
Edberg 6
Becker 6
Murray 3
Year end championships:
Becker 4
Edberg 1
Murray 1
Masters titles:
Murray 14
Becker 13
Edberg 8
Davis Cups:
Becker 2
Murray 1 (basically the Murray family, 1)
Edberg 0
Olympic Gold medals (singles):
Murray 2
Edberg 1 (unofficial in 1984)
Becker 0 (only played it once)
Weeks at world #1:
Edberg 72
Murray 41
Becker 12
Year end #1:
Edberg 2
Murray 1
Becker 0
Slam finals contested:
Edberg 11
Murray 11
Becker 10
Total slam semi-finals reached:
Murray 21
Edberg 19
Becker 18
Most titles in a single season:
Murray 9
Edberg 7
Becker 7
Most slams won in a single season:
Edberg 2
Becker 2
Murray 1
Most slam finals in a single season:
Murray 3
Edberg 2
Becker 2
Total number of slam titles won by players they lost slam finals to (career end/current):
Murray 37 (Fed/Djokovic)
Becker 21 (Edberg/Stich/Sampras).
Edberg 19 (Chang/Becker/Lendl/Courier)
Total number of slam titles won by players they beat in slam finals (career end/current):
Edberg 32 (Wilander/Cash/Becker/Courier/Sampras... caught Sampras just before he became the dominant player)
Murray 17 (Djokovic)
Becker 15 (Lendl/Edberg/Chang)
Longest winning streaks:
Murray 29 (28 if you don't count the Raonic W/O)
Becker 21 (I believe... bit of an eyebleed looking at tennisabstract to work this one out)
Edberg 21
Women knocked up in cupboards:
Becker 1
Murray 0
Edberg 0
Linesmen killed:
Edberg 1
Murray 0
Becker 0
Becker and Edberg both once faced a GOAT tier player, Sampras, in a slam final - towards the end of their careers - whereas Murray faced two of them 10 times, 7 times at slams where his opponent is/was at some point the record holder for titles won.
Although Edberg won the AO twice it was on grass both times during a time when it was the runt of the GS litter. Becker's best result at the FO was the SF (x3). Edberg made the FO final once, losing to Chang, but never otherwise made the SF. Both Edberg and Becker surrendered a slam title to a player who would never win another.
With Edberg and Becker their slam wins largely came in the pocket of time where there was only each other, Lendl and Wilander of the great players making slam finals - Wilander was essentially done after his epic 1988 and whilst the second half of Lendl's career was better when it came to slam finals (in part because the quality of opposition was worse) he would continue to be a mixed bag in those matches. Neither Lendl nor Wilander's best surface was grass and grass was Becker and Edberg's best surface. Wilander did have his 3 slam 1988 but between 1985 and his retirement in 1996 he won one other slam.
McEnroe was still around being a challenge but 1985 wasn't a great year for him relative to what had come before and that year's USO was the last slam final he'd ever contest (in singles). Having kids and taking 6 months out didn't help him but there was always a sense that as a new generation came through already adjusted to the new racquets he was left a little bit behind. Connors was past it. Borg was long since retired.
In individual sports, particularly an individual sport where match-ups are so critical, if a player isn't so great that their achievements are entirely under their own control (at least on a given surface) then what they do achieve is partly down to the good fortune of avoiding the players who
are that great - even a player as exceptional as Federer was on clay has only one RG title, which he was lucky to sneak in, because he had to face Rafa there 5 times during Fed's peak clay phase (and once well after) and lost every time.
Murray matched up badly with Novak on slow surfaces, badly with Federer on quick surfaces, badly with Rafa most of the time (though there's that weird quirk that in finals Murray's 3-1 against Rafa, with two final set bagels!?)
Probably the best way to look at Murray's slam finals with a bit of sympathy is to compare him to Lendl - after 7 finals Lendl had one title and Murray had two.
Lendl lost to Borg, Connors (x2), Wilander (x2) and McEnroe. Murray lost to Federer (x3) and Djokovic (x2). Lendl was 25 year's old, Murray was 26 year's old.
After that Murray their slam careers start to diverge... Lendl's level of opposition drops off and he remains largely healthy until his back takes out his career in his early 30s. Murray has to have mid-career back surgery and by the time he's over that and back to being a threat at slams Novak's back to dominant form and up a notch from 2011 anyway, whilst Federer's reconfigured his game into something closer to Murray's worst match-up style (all court players mess with him the most). After Murray finally notches up a 3rd slam it's not long before his career suffers through health issues in 2017 before the hip entirely gives up.
I'm happy to agree to disagree with people who simply feel that with all other things being equal 6 vs 3 is just too big a gap as long as they acknowledge it's not a trivial call to make. That said, I'm not sure I think Becker/Edberg belong in the ATG category anyway. Not anymore. Fedalovic have taken the goalposts and not only moved them but added a padlocked door to them.
What I have little-to-no time for is the obvious "don't know **** about Murray's overall career and don't care to either", the trolls, and those with blatant anti-Murray bias.