Messi has excellent ball controll, finishing and extreme agility. Because the great defenders and manmarkers are gone, that is enough.
I remember those dribbeling runs Baggio, Ronaldo, Rivaldo, Del Piero, and even Zidane (usually a controll and trick to put 4 players out of position), used to make. That was true dribbeling as it was meant to be
Seriously. I wonder if Messi would even survive one half against Jaap stam or a younger nesta.
Del Piero
Mostly check the stuff before 2000. After the injury he had lost much acceleration and agility, effectively became a diffrent player. Still Bossmode career.
Ronaldo
Check the stuff from barcelona, psv, and inter. The player that couldnt possibly be marked. And his teams were not that great. But he made them great
One of the most impressive stuff from then, is how they could escape incredibly good defenders, just by their controll or first touch, creating space for themselves and dislocating the defensive formation. Wich one touch.