Have you ever seen Maradona doing keep-ups with a half-full water bottle? ever tried to do that? the water goes from side to side, making it very difficult to predict how it'll come back at you...
Pele was more of a team player, though as skillful as Maradona, imho... while Maradona would lead his team single handedly, Pele always had decent players alongside him (which doesn't take his merit, as he is the best known among the great players who played with him)... his vision and creativity were incredible, and he could see the plays way before he had the ball at his feet... his goals against Wales and Sweden, at just 17, are proof of that... but his lesser known play against Juventus (not the italian club) is just magical... three times he's put the ball over the heads of the defenders, just to finish it with another ball over the keeper's head an finishing with a header towards an empty net... all that inside the box...
As for Zidane... he's good, and he's scored two headers in a world cup final at home... he deserves credit for his play, but he's not close to being the legend Pele and Maradona are... but time will tell... Pele played 40 years ago, Maradona 20 years ago... if Zidane can be remembered after 20 years, he's become a legend..