I have no significant reads on how CO is playing. However he is Russian, has a large stack and is hiding from search, which usually means a regular. Also, the zoom player pool tends to play slightly nittier than the regular player pool. I put him on KK+ exclusively when he 3-bet/5-bet jams in this spot. Is that a reasonable estimation here? Should I just be calling his 3-bet if I'm not happy to stack off?