The first two games should be enough to boost sales significantly, as long as COD ends up closely resembling its console counterpart without any serious issues.  I really hope they're allocating enough resources to make this game awesome, and as much as I am against the way activision has handled this franchise with their annual installments, the thought of playing cod multiplayer on my vita is almost too much to handle.  Cant wait.

It needs some unique games. I look at that list and I see a bunch of watered down PS3/360 ports. Nothing that makes me want to drop a couple hundred dollars on the thing.

It's a good idea. But I'm afraid it's console counterparts will/might out-shadow the HandHeld Versions.

Very true, but then again being beaten by the most established franchise this generation isnt necessarily a bad thing, even if the game is within the same franchise.  I believe it may come down to how they market the thing honestly, as long as Sony shows off enough multiplayer to convince more ps3 gamers they need this on the go, it could essentially synergize with Black ops 2 and be treated as an extension, rather than a spinoff.  This could boost Vita sales more than anything.

Gravity Rush is not unique!!!Soul Sacrifice is not unique,Sound Shape is not unique escape Plan is not unique?

Where is the unique games of 3DS?

Great point as well, there needs to be a healthy mix which it has experienced thus far to a point, I still want 1 million jrpgs before the next handheld gen please.

Japanese line-up is the one lacking right now.

Vita must have an EPIC TGS to get back on the track. So far it's, sorry to say, lame. Hatsune Miku biggest game of the year? Yeah, mega-lame.

All of the Nintendo First Party games.

i am pretty sure sony can track their own digital sales toa psn account just like nintendo will be able to do with 3ds digital sales.

in any case you still haven't really answered the question. the only way we will know what the attach rate is once we get some official data.

For one I got i think 13 3ds games myself. None on vita yet as waiting for a price cut to come to Australia.

Vita ona tech levelisimpressive and has an excellent chance of winning the west with the game annoucements so far, but it will take time to catch up in sales to 3ds. Nintendo will need to step it up with western style game support to cater to more people if it is to maintain the lead. One missed opportunity was pokemon. They released two black/white and conquest on DS. Now they need to wait a while for people to get sick of those games before releasing pokemon 3ds. Pokemon has always been a hardware seller for them and no was the time to bring it. next two years will be interesting in the west for handheld gaming to see how it all pans out. 

Personally I feel the vita is almost dead in Japan since its lots MH and the 3ds line up isamazing there.

So Gravity Rush and Soul Sacrifice are not unique and all first party nintendo games are unique!!!

Even LBP is more unique then Mario.