I perfectly know Zidane's game, as i do with Platini.
However, general skill wise, they both were incredibly complete players
Platini played a classic CAM role, just as zidane did when he was at juve. Only at madrid, especially post makelele, he played a bit deeper.
Dont make the mistake thinking platini was playing like tevez.
He just covered a whole lot of ground, but its not like he was nearly a striker
And well, dont call zidane the best ever, when JUVENTUS, had a player in a golden age of football, that won 3 ballon d'or's in a row.