Playing Devil's Advocate with this argument.

 

If you took current numbers and played it out over a whole season. Polanco would be at 24 doubles, and 18 homeruns. I am still shocked that he has no triples to this point as unbelieveably fast as he is.

 

I think you also have to take into account that Bonds had a full year in the majors which no doubt helped out what he did when he was at the same age as Polanco. Bonds first year in the pros he had Polanco like numbers (the ones that were brought up here) 26 doubles, 3 triples and 16 homeruns.

---