Okay I consider myself an expert of zombies, and zombie info.
If it were during the day RE would ace them easy. Cuz the RE zombies are usually availble to move in daylight. Also consider which RE set RE 1-3 or RE4 and 5? cuz then its RE hands down during the day.
At night though the Dark seekers from IAL are much better than anything RE has, they outnumber, outstrength and well they are just over whelming compared to anything you might see in RE ever.
So day Resident evil
night IAL
I don't wanna be a legend, well thats a god damned lie I DO.