From 64-65 to 68-69 there was no considerable gap in talent between Wilt's and Russell's teams. From 66-67 yo 68-69 it was Wilt with the stronger rosters. In the '69 Finals, the Lakers were overwhelming favorites over the Celtics. That's my point.
In 1965 at least, there is a huge
experience gap between Wilt's and Russell's teams. Actually, there had always been an experience gap between Wilt's and Russell's teams, but in 1965, it is at an all-time high among the times Wilt has a team with talent anywhere near Russell's.
And no, Wilt's 1968 playoff roster, without Billy C. and with pretty much any other significant player injured, isn't stronger than Russell's, not even close. You'd have a point if we only referred to regular season, but we obviously don't.