Hearing about those delays, it HAS to be brutal

I know I would be mad if I was in EU.
I don't see the reason why Persona 4 Arena had to be region-locked... out of all the other games. Plus considering that PSP/PS3 games aren't usually region-locked too, that's even worse.
Seeing Persona 4 Golden convinced me to want a Vita. I'll be buying one in a few days

And @Shikumozikuto, yes, I recommend playing 3 and 4.