Sadly, it isn't compatable with NA Vitas sadly

. Due to crappy licensing issues, SCEA doesn't have the Crash and Spyro games on the Vita PSN or as an 'unoffical' BC game with Vita (the ones where you have to transfer the game from PS3 to Vita).
The reason why some NA PSN users have then on there Vita's (myself included) was due to a glitch on PSN a few months back that let every PSP, PS1 and PS Mini software on PSN compatible with Vita

. The issue, was that Sony 'fixed' this a day or so latter, making many that bought the games but was unable to put them on there Vita in time....not have access to them

.
It sucks for those who want the games on there Vitas, but that is the case sadly

. There is a bright side though; if you have a PS3, you could remote play Crash 1-3 and Spyro 1-3 on your Vita :l. Granted, it won't feel nearly as responsive (and you can't even play CTR; it crashes at the menu screen X() but it is something.
Sorry I can't help you man

. Another case of Soony messing things up every now and again :l.