When a Size Queen tries a Mega Cock, the initial penetration is, of course, an important and telling point. Many women lack the ability to cope with more endowed men. Some, partly because of the lack of ability, get to the point where they lack even the desire.
Most Size Queens are Alphas though - in every sense of the word.
Oh, and what’s going on above? It’s initial penetration. This - and the ten minutes that follow are crucial to the Size Queen’s chances of success. Here, she’s taken all that she comfortably can. It’s a peak experience in itself.
Mega Cock, for his part, is not trying for full depth - not yet at least. He’s either giving her a sporting chance, or just waiting for the proper moment to completely overwhelm her. Either way - both of them have a chance at overwhelming the other. Many an inferior woman couldn’t handle this at all.