I don't really know what the question is... buying the dlc gets you access to the extra costumes and whatnot. But if you don't have the dlc you don't keep the items. Move is an optional thing, you don't need to play lbp with the move you can play it with a regular controller. They don't have a vita... is this version of lbp only on the vita? That might be only available there... But I do not have a vita so I don't know about that. I do like the idea of the cross controller thing. I hope that more games do the allstars thing by having the vita versions free to download with the ps3 version.
In retrospect I have missed some clarification. What I mean to ask is if they buy the Cross controller DLC, will they be able to play through the DLC levels with someone who has a Vita? This dlc is for LBP2 on the Ps3, requiring only LBP2, a PS3, and a Vita.