If you ask me LBP is hyped too much and will keep you occupied for say 15-20 hours when you run out of interest, at least I did. Valkyria you're gonna stuck with like 3x the amount of time of LBP. Depends on how long you want to stick to a game.
PLAYSTATION®3 is the future.....NOW.......B_E_L_I_E_V_E
Supporter of PlayStation and Nintendo