Let me start with this (a bit of context): I love italian football (irl and fut). I play FUT for fun mostly, my max in WL is Gold 3/Gold 2 (maybe I can even get Gold 1, but I do not bother because of the rewards). I had Nacho (UCL)/Azpilicueta (Gold) and Ramos as CBs and I really wanted an Icon. If I had money, I would buy 92 or Prime Maldini, but I do not have that kind of money for one player.
About Cannavero: I was worried about his height but in game, it doesn't feel that bad as I expected. I'm not sure what is it, but if I had to guess, I would say that Reactions, Pace, Jumping and Heading Accuracy they all contribute to make Cannavaro be first at the ball. If it doesn't jump first, he doesn't really get to the ball, but at least he forces the attacker to be innacurate.
If the ball isn't in the air, this guy is awesome even in extra time. Sometimes I have the feeling that he is better in extra time even against some fresh subs. Yes, he has short legs, but he has the knowledge to be where he needs to be. Stamina isn't really that big of a deal. Sure, 85-90 stamina would be great, but it's decent.
In my opinion, you can't really reproduce what he was on the field. The teams he was in had big goal scorers, but the defensive structure was on top (look the World cup 2006). And even Cannavaro himself said that, as a defender, it doesn't matter how tall or short you are, how fast or slow, you need confidence. You can't reproduce confidence in FUT.
The last thing... I will not give 5 stars because of Maldini, who is the best in my opinion. Cannavaro is great, Maldini the best.
-jumping and heading accuracy (even though he is short)
-agressiveness (just aggresive enough)
-his height (but not all the time)
-stamina could be better but work rates help