And I sorta like the fact he hasn't played a lot of games, I mean, look at Rooney & co., an argument could be made that he practically burnt out (of course conditioning comes into it too), he has so much mileage in the clock from such a tender age.
Whereas Morata has got all the experience that Rooney had in those raw years; CL latter stages, El Classico's, Madrid Derbies, games and goals vs. both Milan's. He has fully matured and filled out at 24, and despite the fact he's already showed real ruthless ability in front of goal, the most exciting part is he's still relatively unexposed - he can get better and better, with practically an entire career ahead of him. Possibly a decade or more at the top level.