Just to clear things up for everyone...
That night I ran a 4300 (10.5 turn) with a sintered rotor and I think it's the closest thing I've run to a brushed 19T so far... regardless if it's brushless 19t or brushed 19t it all still feels slow when compared to a 3.5 turn
I've run the 4300 in the past with lower gearing and standard bonded rotors and felt it was too slow to compete with the "19 turn heroes" at socal
I've also done testing with 9.5 turns and felt those were far too fast for fair competition with the brushed 19Ts...