Thank you for clarifying that Archi and for your thoughts that the gameplay intent shouldn’t be to focus on the cancel aura! It does seems counter productive by Blizzard to make us cancel an aura or purposefully hold off a thunderblast in a big pull in M+ to guarantee that 100%. Also interesting that it isn’t interacting with thunderclap at the moment, but it is alpha, so I get that. This is why I posted about it, because although we warriors will watch what we need to to optimize our best even if all we do is 10’s and heroic raid, it just seems misaligned right now.
If it sticks, I honestly had no idea that I could do that Kazecap 
Thank You! At 38 I can still learn some new tricks 
I would literally do that every thunderblast to get that 100% lol