Grrr, I shake my fist at you sir! ( Nah not really.)But, in all seriousness I've taken the above on board. As a result I heavily altered his two releases (by which I mean re wrote almost from scratch.) Not only does it seem a tad more thematically consistent this way but it’s also much less powerful now. The 1st release can only do one ranged attack at a time, shorter range and for my money less lethal. Plus Osamu has to move about and be active to get anything done now. 

Similarly with the 2nd release he has to move around, the level of protection is roughly the same but it’s hard to precisely define it, he has far fewer potential simultaneous attacks or potential attacks per second and is just generally more under control. Let me know if it needs further tweaking but I think this addresses your above concerns and seems on a par with the other releases of equivalent levels.