You were right about this, and I was wrong. The keys are the same size. What's different is the "give" when you press them. At least on my Pro, the keys feel very flat and do not provide much feedback or spring as compared to the Fuze. The Fuze keys provide a click when you type on them and have a much better feeling to them. It's bad enough on mine (the Pro), I'm wondering if I might have a bad device. I might go to the Sprint store tomorrow and compare it to a new one.