>>19513035>priorityYou're talking about checks, not counters. Name one common priority user that can swich in on Archeops and set up without worrying about a one or two hit KO. There's not even really any in OU, much less the lower tiers. It's easy as hell to force out, but very few pokemon can just switch into it.
>defeatist doesn't matterIt totally does, though. passive damage, recoil, and resisted attacks are all things that can bring Archeops down to half without knocking it out completely. And below 50, it's setup bait,therefore a liability.