ran hand on poker stove, if u put villian on 99, JJ+,& AK.. ur just better than 51% equity on the river, but through AQ into his range & ur down to 40% equity. even if u narrow his range to just QQ+ & AK ur still 51% equity on river which doesnt seem right given QQ+ all have u crushed, looking over the hh again i feel its either a bluff with ak, or he slowplayed aces so next time this situation comes up, close ur eyes, tell ur self hes bluffing & click the button that says CALL while envisioning AK on the other side of those snazzy ftp cards he holds in front of his frankenstein wanna-be avatar
or be safe, tell ur self "no way hes bluffing, too much to call, if hes bluffing i will make him pay later" & fold.