I believe you 420%! What I don't understand is that, if it's not going through the liver, where is the THC getting absorbed into the bloodstream?
As a general rule, I believe the body has a tougher time breaking down the long-chain fatty acids, which would, in theory, make their use in edibles less potent. While the lecithin does increase the bio-availability, it should do that with any of the carrier oils.
I'm sure something is going on with your brownies - I just want to understand it so I can apply the knowledge effectively.