I wished I knew what to tell you, but I think it is only normal for either gender of the one that had an A to feel that they are being compared to the OP and that they have to be better at ML that the OP was. It is especially such a sensitive subject with men until I don't know how you could approach it. The only way I know is to gently and softly talk to him and tell him that you can feel him trying to hard to "prove" himself to you and that it isn't necessary b/c you know you have the best man. You could somehow tell him that you think he is great in bed, in your on words tell him how much you like what he does or admire him. I'm sure he feels pressure and just needs reassurance. I'm not too good at doing that sort of thing....wish I was better. Maybe some of the men on here will give you some admice.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!