Jack is not an L3. Jack is a variation of an L5.

I think you are mixing up L3's with L2's. When you say "L3 means indeed means less stable" that is actually an L2. L3s are the stable ones. L3 implants are known for their consistency and safer reliability-- the downside to this is that their power limits are LESS than an L2. As I said before, L2s can spike higher than L3s, just because 3 comes after 2 does not make it more powerful. L3 was the safe answer to L2s, but they sacrifice power for that safety. According to the wiki as well he says at some point he can 'spike higher than most L3s with the exception of Command Shepard' (and we all know Shepard is a bit of an anomaly since he/she is the player character).



I don't know why you want to insist that Kaidan can't be at least as strong as an asari when even you yourself said there are both weak and powerful asari biotics. His ability to Reave (and the fact that he can Reave amazes the other biotic teammates) is a clear indicator he isn't a normal human biotic. Considering the only other squadmates that can Reave are either Aria or Samara (both asari) this is something important to note.