To be honest, I completely forgot the game was coming to the Vita. In fact, I don't even know if it's out on the system or not. I'm pretty sure it's not, but correct me if I'm wrong.
Either way, I have faith that the game will release during a drought of some sort and move about 50,000+ copies first week. After that, about a few thousand copies each week. No more than 500,000 lifetime. Plus, when it comes out the game will have been 2 years old.
How much do you think it will sell? LTD and FW.