Night Thrasher's Unstoppable not getting stopped by CAIW

One of Captain America's (Infinity War) passive abilities when Kinetically Charged is 100% chance to nullify Unstoppable Buffs when you strike them. Now, can someone clarify if this is considered a Debuff, or should this passive ability work against Uncollected Night Thrasher? Because everytime I went for the intercept it didn't work. Works like a charm against everyone else that goes Unstoppable so far. Now, I know one of the node Buffs says 'When performing a medium attack, Defender is immune to Debuffs, Unstoppable and gains +200% attack.' Is Cap's Passive Nullify Unstoppable ability considered a Debuff? So many technicalities lately one cannot be sure if it's a bug or working as intended.
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Comments
Since Night Trasher unstoppable is not a buff, it can't be nullified by his ability
Edit: This will not stop his regen though. So unless your CAIW is high ranked, I wouldn't advise using him. He's immune to his Petrify. Ability Accuracy reduction via Voodoo's Spirit Venom is one of the most effective means of stopping both. Neurotoxin from an awakened AA works as well. However, as he's listed in his profile as one of the Best Champions in the Battlerealm, The Champion will gain Persistent Charges quicker with AA over Voodoo. Really depends on your roster.
Actually, it does stop his regen. The Champion ONLY regens while he is unstoppable, so removing that removes the regen.
Lol I’m one short the champion with cap IW much faster that my vodoo Wuld
Cap downed The Champion way easier imo. If you have a mutant on your team Cap stays Kinetically charged pretty much the whole time.
But on topic, its a bummer that Cap doesn't stop NT's unstoppable.
I am a huge Voodoo fan, don't get me wrong, but caps damage output IS insane.
Let alone his L2 with 5 kinetic charges, his heavies start doing major damage, especially with stacked armor breaks