Hall of Fame
So the YE #1s, WTF titles, Masters 1000s titles, and weeks ranked #1 mean nothing to you even discounting the era considerations?It's not nitpicky at all. He hasn't passed Agassi until he wins RG or a 9th slam (without a RG) IMO.
Thats essentially what you are saying if you contend, them being equal in slams would result in Agassi still being ahead.
The Career Grand Slam is important (as you can see I give it about 2 slams worth of value), but having double the amount of YE #1s + triple the amount of WTF wins and being ahead in both masters titles and weeks ranked #1 override that if the slam count is even.
All Nole needs to pass Agassi is 1 more slam. If he gets that at USO and is able to do a few more things this year (add another couple of masters, maybe another WTF, and finish YE #1 again) then he can pass McEnroe too.
He needs a bit more longevity than that or a 9th slam only to pass Connors IMO.