I'll just preface this by saying I'm not good with bet sizing. I don't really know what it means that he only bet 1/3 so I'm just not really worrying about it.
I took his entire range and removed the hands that he probably wouldn't bet here with.
Here's his range that I had him on.
99, AQs-ATs, T9s, KhQh, KcQc, KhJh, KcJc, AQo
And really the only thing that I don't think he would bet here are his middle draws and JJ, TT. I took our the pairs here because from his perspective he doesn't get any value there so he'd just check. The middle draws he probably wouldn't want to risk a dominated draw so he's only semi-bluffing this his high hard draws.
So here's his new range and our equity:
[FONT=courier new][SIZE=12]
Board: A
9
7
*9
*******Equity*****Win*****Tie
UTG+1**81.46%**81.46%***0.00%*{ 99, AQs-ATs, T9s, KhQh, KcQc, KhJh, KcJc, QhJh, QcJc, AQo }
BU*****18.54%**18.54%***0.00%*{ QhQs }
[/SIZE][/FONT]
We only get 18.54% and we're being offered 20% so it looks like we're forced to fold here. He just simply doesn't have that many bluffs.
I'd love to hear what anyone thinks about the bet sizing and if that changes anything.