I completely agree with dave. The alien/predator games aren't really to be taken seriously, they come out with all sorts of ridiculous designs, if anybody has ever played AVP extinction, they'd simply laugh at some of the stupid new aliens which were created for the game. Ridiculous cr@p like carriers" & "ravagers" all make mockeries of the alien franchise. Most true fans don't go by that nonsense.
As for the alien in a3, well, yes the name "runner" was created for the games, but what else were they supposed to call it? "drone that walks on all four legs & has brown skin" would be kinda screwey, so they made up a name for the creature. The only thing innacurate about them in the games is the fact that they aren't born from an dog/ox (depending on if you have seen the special ed of a3 & you'll see where the ox comes in), in the games the "runner" comes from a different host, in the case of AVP2, they come from human corporates, this is completely innacurate, they are only born from quadrupedal organisms. The games aren't to be taken seriously if u really consider urself a fan