I was in the mid-high 200's for bodyweight way back in college (bodytype would be Tim Boetsch on roids) and I'd "backyard roll" with this guy who fought at 170. I could pretty much shoot on any body part or grab anything I wanted. Close distance, grab a leg, submit it. with garbage technique and no skill just using videos and intelligence of anatomy to torque different locks with very little BJJ mat time behind any of it. Grab an arm, twist it, yep that looks like a kimura, tapped. In a bad position for a lock, no problem just toss the little bastard around and switch ends could go from a shoulder to an ankle without him being able to do anything about it.
As long as it was done standing up from a shot, he seemed lost on what to do. Now if you started me IN his guard, that could be a problem but even then not sure I couldn't just submit him from his guard. We always started standing up and I'd shoot on him and scramble for the first thing that popped up from the fall. In the scramble he'd be completely lost. I never felt him able to "win" during the shot and immediate follow-up scramble. If I didn't get anything in the immediate scramble though, I'd start to feel threatened and my size advantage waned and I'd have to really start working and keeping track of my breathing/gas.
Josh Barnett believing so much in "catch wrestling" over BJJ for the heavyweight division might have something to do with locks taking less skill and technique at that dvision. At a certain size I'd think BJJ starts becoming impractical. I can't think of any heavyweight BJJ that I've seen but I never really thought about it until now.
I'd guess because BJJ is a lot of hips and guard, and you can't use those two things with that kind of weight.
I knew this going into it but the guy had small man complex and wanted to try to use his skills on some big guys. I was just a kid, today I don't believe in backyard bullshit and I don't believe in active fighters messing with people who don't actively train and/or fight regardless of the specifics. And I'm wiser to these napolean fellas. He could have went for less than double his bodyweight in front of his girlfriend, there were other guys there...I had that fuck in an ankle lock and he wouldn't tap. If he wasn't my friend I'd have thought about socking him in the head for having such a bad attitude and poor sportsmanship. I let go of it after saying whats your fucking problem man, tap. And just got up and said that's it. Small man indeed.