We all likely recognize BJ has the obvious advantage in the striking department both in terms of polished technique and power. But what about the ground game or each fighter's cardio? Desert Dog correctly assess the situation. Notable quote:

I'm not familiar with any head-and-arm choke set-ups from failed guillotine attempts, but the point still stands: even if you give Stevenson the edge in strength, it's not as if BJ hasn't routinely fought stronger opponents. Everyone bags on BJ for fighting in weightclasses for beyond his natural size, but perhaps that pays dividends with respect to experience. When you've fought significantly stronger fighters, e.g. Lyoto Machida, grappling with "strong" fighters in your weightclass can't be nearly as bad.

The fact is that aside from strength, I'm not sure Stevenson is better than BJ at anything. Stevenson has a more diverse wrestling arsensal, but BJ has an excellent skillset to neutralize capable wrestlers. Stevenson always has a "grappler's chance" in this fight, but I don't think he has much more.