It's not about who did more for who here, it's about who was better player. And with all due respect to DP, Zidane was really better player, I think Baggio might be the one he's talking about, though for me too, Zidane was level above Baggio. And you really can't know with him, it might be some player from the late 1900.
And I don't disagree with you. Zidane was better player overall and the best one I've seen. His technique, dribbling, passing, free kicks were all impeccable backed with strong character and charisma. Considering his contribution and achievements for French NT, Juve and Real, he will be remembered as one of the greatest players of all time.
Now I'm only saying that Del Piero was better player in Juventus in the time they both played together side by side. Without Alex Juve struggled (1999), without Zidane not so much and his sale was one of the best moves by our previous management which helped us to effectively rebuild the team. Zidane in his last two years here lacked motivation and eventually became unsatisfied.
So for me Del Piero was the best player I've ever seen in Juventus. I can't comment on previous legends like Platini, Sivori, Boniperti as apart from probably the same Eurosport games which Zach has seen, I haven't been around for that long to give qualified opinion. All that I can say is 705 appearances and 289 goals. Simply the best
