WSOP: Final 3 of event #42, Strategy Question

[Gunslinger1988]

This was an amazing hand. We are 3 handed, almost equal in chips. Prizes are 227k, 140k, and 92k. Blinds 20-40k, Game PLO/8. The button raises to 120k. Stacks, Button 510k, Me 620k, Big blind 560k. His hand range is fairly loose here, and he will not fold to a reraise. I have Ad4dQh6h. I call. The big blind pot raises, committing himself. The button as expected goes all=in for 510k.

I tanked for a long time here. I had to factor in my hand equity,( my estimate was 30%) the pot odds, and all the chances of the various prize money finishes. For heads up play, I would have been close to even with the big blind, and a decent favorite over the button, based on our skills. I WOULD LOVE some other opinions on what the right play is here.