Yea I'm with Jon...just a white belt. Lol. But yea, if I saw a two weeker was killing with a sub or even a pass, I'd want to know if even a small detail was different bc usually it's the one small detail that makes something that much tighter or have a higher success rate.
And also, everyone learns and progresses different. You could have someone that has done JJ for 2 years and then a guy can come in and excel 3x as much in 1/2 the time. Wouldn't the two year guy want to learn from that guy? Why not swap technique. I watched a video yday and a black belt said we are all even..equal if you will. Not only was that humble, but true!
We can all learn from each other, no matter our rank. Why does it have to be that a purple and brown belt can't learn from a blue or that white belts are stupid and no one wants to hear what they have to say on technique when they know how to finish a triangle better than some blue belts...Get what I'm saying? :-/