Really loved this chapter. The guy was trying so hard not to underestimate his opponent, that he ended up overestimating her. Her bluff after that screw-up didn't help either. Glad to see she realized the power difference and surrendered.
It was fun in this chapter, but I don't think the format can be repeated indefinitely. It'll get stale fast.
The good thing is that he realizes that he is strong. Just not how strong. He's been trying to get a reference point these past three chapters. Looks like his previous reference (his trainers) were grossly overpowered.