I think what they will do is make a game slightly based on the said Xbox PS2 game and use the name of that game to get sales on mobile platforms as alot of the people who by games for their phones are casual gamers and see a name they recognise and buy it in hope of it being good.
Some of the best games are’nt the ones with the ‘brand’ name but they dont always sell aswell as the crap name games.
But thats the market they are in ! (and its a hard market to make money in).
:)