How many more Slams should the games legends really have won?

[JAY1]

Hoad, Laver, Rosewall, Newcombe, Connors, Borg, Vilas, McEnroe, Lendl, Becker, Wilander, Edberg, Agassi, Sampras?

Ok i'll start off with Connors as an example....
Should certainly have won the 3 Slam finals he lost in 1975! Let fame and burgers get to him.
None in 76.
Lost 2 finals in 77 Borg @ Wimbledon, many can argure he should have won this match, but no he just lost a close match. Should have beaten Vilas at the US open no doubt at all, but let the crowd totally physch him out.
78,79,80 & 81, couple of close 5 set semi-finals, but nothing here 'Connors wilderness years.
83 & 85 Wimbledon's, two losses to Kevin Curren when Connors was outstanding, especially in 83 - these losses irk me, the 83 4th round match when he was put out on court 2 'the graveyard' (Can't really count these he lost too early, only final losses count)!
So all in all he won 8 slams but should have been Grand Slam singles champions on 12 occasions.
Over to you experts......