^Well, the whole surpassing moka could either be extremely far away or very close.... On one hand, moka right now can school him without actually making an effort. On the other, he is about to learn the dimensional sword thingy and it is extremely likely he has shinso powers which would mean he'd be able to do at least what young moka did to walls in the flashback. I guess it depends on how determined tsukune is or a random circumstance which would cause him to awake his power.
Wonder why akuha hasn't actually grown over the past few years though. What did she do? perhaps it has something to do with why she is so strong.
One thing I have been wondering since the begining of the manga is what exactly is outer moka. Clearly it is inner moka who is the original one but is outer moka a fake of sorts altogether? Kinda like super artificial intelligence at best? If that is the case then outer moka's very life has no value whatsoever beyond that of a mere object. Then again the manga went in a direction that outer moka is also a real person of sorts. Perhaps outer moka is merely a personality resulting from losing memories and power? Basically, the creation of a fake personality was not intentional but merely the result of one or both of the two things I mentioned? Technically the manga already addressed her as a fake personality but in turn I don't think outer moka will eventually be treated as a mere object but rather an actual living creature.