Damn. Wish I'd bothered to get one for my Courier now. 
From a regeneration perspective, of course the Bi-Weave is better. The point of this is the resistances, which you can get far higher than normal by having the double engineering, and adding say 1 heavy duty + super cap and 1 resistance augmented + thermal boosters, and you're doing pretty well for all resistances.well, a bi-weave has only 23 mj less shields, but it goes from 50% > 100% in 43 seconds (with high cap)
The 3A (with fast charge) does that in 77 seconds.
IF we add the delay timer to start recharging... bi-weave is even better