>it's 200 big blinds which is significantly harder to be good at than 100 big blinds which is the standard for online HU play.

I'm quite surprised by this!

100bb has higher variance and therefore more luck, where 200bb has lower variance

So, I would say the 200bb tournament rewards skilled (human) players more effectively. As a skilled player, I would seek out the 200bb tournaments.

My immediate thought would be that a computer player would be rewarded better in the 200bb tournament.

But, even in the 200bb situation, players will have to play short stacked some of the time. Perhaps the difficulty for bots is the requirement of changeable modes here?