There is enough evidence to conclude Wilt was a better jumper, there's some evidence he might have been faster, but it's not borne out in any video evidence...and there's nothing to prove he was stronger, or more coordinated.
And David's FT shooting had nothing to do with skill...David never worked on his game, especially hit FT shooting.
Wilt was just about the worst FT shooter in history and he took more of them than just about anyone.
He sucked at it...and it is coordination.
And it was a weakness in his game that could be easily exploited...David had no such weaknesses.
David's only weakness was being doubled and tripled team, which is the exact same weakness Wilt had. And it's not really a weakness either....