[pulse]

This is not one pair, this is two pair. And this looks like a pretty good board for A-K. Reasonable hands you're behind are A-Q, 4-4, and 9-9. Turn and river are good because you're now ahead of A-4 and A-9. Also, I really disagree that the min raise means strength. Some players will min-raise w/ any draw, or if they catch any part of the flop. I would say it's a little more likely that he's strong because it's a check-raise.