Here's all three.
Verizon
ATT
Sprint
(not to scale)
Off the top of my head I see Sprint has two shift keys, two keys taking up two spots, a txt AND an email key, you get the picture. Saying the VZW phone has less keys and inferring that it's inferior because it does isn't really accurate. The keyboards are all roughly the same with the ATT being the worst in my opinion by missing a number row. But that's just my opinion, not fact.