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I maybe giving the random bad player too much credit, but absent a strong read I think he's raising a weaker ace maybe even a third to half the time here --the odds of him having either a K or A are the same, and A would seem to be slighly more likely for a cold call pre-flop.

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I'm not sure the calling preflop raise really skews the odd that the player has an A over a king. Could just be He liked whatever it was good enough to limp in Late position and didn't like the fact that the BB raised him (with what could be anything suited and somewhat good)

If I was the villian I'm not sure I would have the balls to unleash a aggressive Turn Reraise after the PFR has shown nothing but aggression at this point.

I would actually think a Preflop raiser betting out on the flop shows he might be scared. If you had the A or K you would most likely slowplay it an hope the other player made something. A or K in this situation is going have a big advantage.