The Touch Pro 2 has the same "guts" as the Touch Pro. Now if your on Verizon, the Touch Pro 2 will have more RAM as VZW didnt gank the RAM on the TP2 like they did the TP1.
I have had both, and had both VErizon and Sprint.
Heres what I think:
The TP2 bigger display is very nice. You wouldnt think it at first, but man, once you use it, its pretty damn awesome.
The TP2 has a keyboard that is metric crap tons better than the TP keyboard.
The TP2 has better battery life (so it seems). I honestly have no data to back this up, but it just seems to run longer than my TP's did.
The Tilting display is cool, but I rarely use it... I mean rarely. Usually I only use it to show off to friends... oh... and when I am sitting on the can, I can put my phone on the sink, tilt the display and watch youtube vids (Phillip De Franco!!!!).
Other than that, the phone is the exact same.... same proc, same ram, sam radio, same everything else... just in a different "Shell".