User blog comment:(Spoiler Warning) Dniv/Mikoto is now a badass?/@comment-11437688-20130727012035/@comment-11612775-20130728125519

I haven't found the raws yet myself, so I made that comment to asume the possible reason why 'Level 6' has it's own bubble. Besides, other than for Science, this experiment could also explain a bit further the mechanics of the Awakening. Also, this (currently called) Demon Awakening, really makes me wonder if that is what happens when an Esper of a high enough Level would be (far more) forcefully (than the Level Upper) granted additional calculation ability and all limiters removed, contrasting the natural  Angel version Awakening when an Esper with an ability that defies the laws of nature reaches some type of maturity/has great enough mental anguish/sheer rage. Gensei would probably want to get some hints on how to somewhat increase an Esper's power even with them already reaching Level 5, so this experiment not resulting in the creation of Level 6 can still result in hinting how it can/can not be created, so it is plausible that Gensei isn't just wasting time for an interesting, yet fruitless experiment.

Oh, and if he was really one of the masterminds (alongside Aleister, of course) behind the Level 6 Shift as Misaki mentioned, Gensei probably knows about the Main Plan.