I think Ronda's success comes from how good she is, but also from how bad the rest of the female fighters are. Kaufman couldn't defend a single thing. Ronda got the takedown, achieved mount and got an armbar like 10 or 15 seconds in. I would understand if Ronda mixed it up or used great timing etc. Nope. She ran across the cage and immediately got the clinch. Sarah knew EXACTLY what her gameplan was but couldn't stop it for even a second of the match.
Again, I recognize how good Ronda is but the talent gap in that division is ridiculous.