1. 7/10 matches juventus with dp is a better juve than without him
Is it really the case, though? I know that stats give wrong picture many times, but last year for example, Juve won:
1--- 32 points on the 15 matches where DP didn't play (2.13 points per match)
2--- 23 points on the 23 matches when DP played (1.00 points per match)
Now, when looking at these stats one must have in mind that some 7-8 matches when Del Piero didn't play were at the start of the season when the whole team was playing well. In the bad period that followed after November, there were matches when DP didn't play and the team still sucked.
So people can't really say that Juve plays better without Del Piero.
But the numbers above, and the matches we all watched, also confirmed imo that Juve didn't play any better either when Del Piero played, so I can't accept what you say above.