Possible Bug in AW

I brought OG Iron Man to an AW fight with Enchantress. The Big Thing Challenge - Buff Safety node says that the way to gain Force Charges is to either be immune to nullify (5 charges) or to buffs (1 charge). Iron Man is immune to nullify when it comes to his personal armor up buffs, but not others. Despite this, I don't get any charges when his armor up buffs fail to nullify.
At first I thought that the issue might be that the Placebo buffs got nullified ahead of the armor up buffs, since those are fair game. However, when I redid the fight and purposefully made sure not to trigger any of the Placebo buffs, I still didn't get any Force Charges whenever Iron Man was immune to nullify. About a minute into the fight, I finally trigger a Placebo buff which then gets immediately nullified and grants Enchantress some power gain.
Am I misunderstanding something or is the node trolling me?
I've attached a video of it all.
https://www.youtube.com/watch?v=UpUpZOSW2pQ
At first I thought that the issue might be that the Placebo buffs got nullified ahead of the armor up buffs, since those are fair game. However, when I redid the fight and purposefully made sure not to trigger any of the Placebo buffs, I still didn't get any Force Charges whenever Iron Man was immune to nullify. About a minute into the fight, I finally trigger a Placebo buff which then gets immediately nullified and grants Enchantress some power gain.
Am I misunderstanding something or is the node trolling me?
I've attached a video of it all.

0
Comments
I'll just go and sit in a corner and hate the game for a little while.
(Thanks for clearing things up, though.)