I really disagree about 
AA and 
KK being more likely than 9x. These will be 3-bet 
pre flop so often that they're pretty unlikely 
imo. This is 2NL where from what I've heard people treat 
top pair as the 
nuts, and altough they may not be "
thin value betting 3 streets" out of being a good player, they may 
well still want to get a lot of money in being 
level 0 thinkers and liking what they see. 
Pot control is surely not a concept familiar to too many people who play for fun with a $2 
stack. 
At 2NL the vast vast majority of players 
don't read poker forums or think about what they're doing in the slightest, so weaker hands can easily be in his 
range here especially given that you've given him no reason to 
slow down (calling a min riase on the 
flop doesn't scare these guys). At 25NL this 
line would concern me more.