DJ, I'm using Pulse Pitching w/ Broadcast Cam on the Vita as we speak (will be my Pitching choice for this year... Love it!) - going from my HDTV to the Vita there was an adjustment period (at least for me) but should you be worried? Not at all!
FYI, I never owned a PSP - probably another reason why it took me a bit to get comfortable.
Bottom line, the game looks fantastic and gameplay is extremely fluid. I'm enjoying every minute with this device and I'm looking forward to purchasing one upon it's US release - I was sold the moment I saw this in action.
For the Poster who asked about turning off the Foul/Out graphic - you can't. Hopefully it'll be an option next year.. I passed on the word about that.