i think if he expects us to fold a 9x or weaker a decent % time on the river vs this overbet, it is a call more often than fold.

However: as already mentioned , i don`t think he expects us to fold us 9x too often, esp vs "suspitios overbet", which makes it a fold here almost always. But this one is realy so dynamics and history based hand. Can go either way and you realy should be at the table