What is it, from your knowledge of these two, that Joey understands that Jay doesn't?
Votto has an exceptional work ethic and he has always been a student of hitting. He has talked about maintaining focus better this year on an at-bat by at-bat basis. He clearly wants to excel (and prove people wrong -- he felt he was kept in the minors too long) and demands improvements from himself. Not a knock on Bruce, but he impresses more as a guy who plays by instinct. He has been slow to make adjustments -- the swing is still pretty long at times, and he has talked more than once, even this year, about "doing what got me here." It's important to have confidence, as he does, but it's also important to keep learning.
Bruce may have more natural talent (Votto has plenty), but eventually that fades, and the guy who is the exceptional worker and student will have more staying power. Just my opinion.