"I don't understand why people play guessing games with unknown players."

Isn't range assinging against an unknown just guessing?

Although having said that, I can see your point about "guessing" he'd fire more than once with AK. I think we need reads to call a second bet. I think I'm rearing my ugly 2nl head tbh, at 2nl you can be safe in assuming that AK does indeed bet more than the flop a lot of the time, so calling jacks down is quite profitable at 2nl. Of course, 25nl is a different ballgame, and I'm suprised to see someone badly overplay tens if I'm honest.