How big of drop do you expect Tales of Vesperia in Japan next week?

[mrduckbear]

If we recall, MGS4 had a huge drop-off from 460k in its first week down to the 60k range i think. and had a 71k drop to the 35k range.

 

So how much from of TOV of a drop off do you think next week as well as the 360 sales?