I got a 33 streak in the Battle Maison, and lost because my Talonflame's Brave Bird missed on turn 1 against a Pinsir with Bright Powder. I then got a 36 streak the next day, but lost because my +6 Azumarill Aqua Jet missed against a Bright Powder Excadrill.
I almost wanted to quit playing Battle Maison after that, haha.
I feel really sorry for you there dude, Bright Powder surely is broken.