I feel for you.... and I appreciate the fact that someone might take 1 extra second just to make sure they dont repeat your mistake... But really your complaint here is that sony have a unified store on the ps3 and I actually love that, I can start up the ps3 and browse all the discounts which are available for the ps3 and Vita or cross buy games which are available for both if I buy them. I really love it, but I do feel for you having made a mistake.
Maybe email Sony and explain what happened they might refund you so you can buy the game for the ps3 instead... or even just help you by shifting it from a psvita license over to a ps3 license for the game.
Why not check me out on youtube and help me on the way to 2k subs over at www.youtube.com/stormcloudlive
