Very interesting dynamic brewing here. Two short stacks trying to outlast each other. So each has to basically fold their way down to like 5bb or something. The $EV of 9th is so much greater than 10th. Because of this, the big stacks can just bully the **** out of anyone at the table.
Edit: Now that the old guy just won a pot, this post is kindve useless since 10th now is signifigantly shorter than 9th