I started training about two weeks ago and i love it. I get my ass handed to me by most of the blue belts when we roll after practice. One of the blue belts though I rolled with and tapped him three times in about 5 minutes. He is very unathletic but I figured he would still be able to handle me easily since my lack of experience and the fact he has probably 70 pounds or so on me. The other blues are probably 5 times better than he is. Is this normal for their to be such a large gap in skill between people of the same belt color?