Homecoming is at 500k+ WW at the moment just for comparison, albeit probably had a bigger budget. I've not played it though so I've no idea if Konami will have ended up investing tons in it - it seemed to have no adertising whatsoever here, just like Shattered Memories lol.
I doubt Shattered Memories will outsell either version of Homecoming tbh actually... which is pretty poor 0_o.