I am pretty sure that there is a glitch with Sir Daniel's shield. me and some friends were playing and sometimes when i would absorb a projectile from Nariko (Up Circle) i would gain a 1 and 1/2 bar of AP ill try to get video of it and posted if it not someone else try to confirm it so i dont look crazy
I've only had this happen twice to memory though, its not a serious issue but I'm sure more will pick up on it soon.
I knew it!
I was playing 2 vs. 2 once and my enemy just finished using his lv 2. When he pulled out his shield and we shot projectiles at him, he suddenly jumped right back up to 2 again. It is definitely a glitch, the shield is supposed to absorb the AP gain that projectile would normally give to its opponent.