Xavi also played in 'dem olden days when they used to have so much space' but behold, his best years came only recently when the game evolved. So much for that argument.
Not gonna argue with you lot on Zidane over Iniesta (didn't expect anything else but Iniesta being favorite here) nor derail Iniesta's topic further. But I do suggest reading some other opinions from neutral fans and see what the world outside Barca thinks on the topic and get a more realistic look.
Xavi did not reach his peak before he became 28. He was not a superstar before than. Great player, but not a superstar like he's been ever since.
Why a Barca fan who knows what Iniesta has done, and can do, is so bullish over Zidane because he was hyped to the heavens by the media for some iconic moments? Yet you leave behind the countless games he was little more than a passenger with the occasional pass and step-over. I said in 2008 that Iniesta would surpass Zidane, and lo and behold it has come to pass. Those neutrals you are alluding to, have even started to shift recently. Some years ago, only Barca fans would dare compare the two. But now, it is done by neutrals as well, which on its own says a lot. From these "neutrals", surely a 60 to 70% would go for Zidane (maybe I am being a bit too generous on Zidane here) but that is only to be expected since Zidane has finished his career, his bad or average games have been lost like tears in the rain (going a bit poetic here) and all that remains are his glorious moments (the 2 headers in 98 final, the volley in the CL final, his good moments with France 2000 and 2006 etc) Iniesta has not yet been immortalized because he is still playing, still being scrutinized for every minute he runs on a pitch. If he goes off the boil for 25mns in the 2nd half against Betis away, we will notice it, and register it. If he was average against France in the Euro QF, we still remember it. Even if he were to stop tomorrow, Iniesta has practically eclipsed Zidane, and that is a fact. But guess what, he has at least 4 good years in him, and that may mean 1 or maybe even 2 more CLs, and maybe even one more International trophy, and surely some more iconic moments.
When that comes to be, even the most "kamikaze" of his fanboys will have to conceit defeat.