Just because you catch someone once doesn't make you better, even twice, even 3 times. A lot of factors come into play when you're doing Jiu Jitsu especially in the gym. In the gym, is the belt you've submitted the same exact weight class you'd be in? Did he have a long day at work? Did you have a long day at work? Where's his head at? In competition away from the gym, I'd invite you to play up a skill division, to see if you can tap a blackbelt in the expert/advanced division. If you consistently DESTROY blackbelts at competition, then my hats off to you, but more likely than not, everyone here has an instructor thats putting themselves in a dogshit position to try and battle out. So before we start putting Black Belts, Brown Belts, Purple Belts, on blast lets really take a deep breath and check all of our ego's at the door.