No, I think her comparison is pretty accurate....Your argument is the same line of logic that for a, "I'm as good as a doctor because I like to help people. I just can't put devote any time to medical school like all the other doctors."
I would say that both of you are making a logical fallacy, equating loving the art or feeling committed to it to claiming "my aikido is as good as your's." I never said the latter. I have said up front that I am not a professional aikidoka. But as Mary has pointed out, neither of you are in a position to second guess our hearts, our motives, or, yeah, or level of committment to the art.