Becuase taking the points in Dominion is a channeling move, teams will more likely take CC heavy teams over Bruisers, mostly because, while bruisers can take and deal good amounts of damage, they are WAY less mobile (which is important on this map) and they usually lack hard CC. Bruisers will still be able to do their role, but because you don't win with pure damage (by killing towers/inhibs/etc) that fact alone should balance them.
In my opinion, bruiser are very adept at the small skirmishes, like you said, but in this map avoidance is actually an option now. I feel like Blinkers will be far more devestating in the overall game than Bruisers will be.
I think that the people with AoE CC, Blinks, traps, and low-level stuns/snare will be the deciding factors.