I'd frankly consider Nattie one of the bigger more powerful women in the WWE lockeroom too, though she doesn't necessarily look as muscular and athletic as Ronda. I'd definately say Ronda looks like one of the more muscular women in the WWE lockeroom, and is probably one of the strongest.
But looks aside, we all know Ronda is a very very legitimate combat fighter, so I suppose her looks are almost secondary.