You’re wrong about Onslaught, it’s crazy powerful and good for catching unsafe moves like air dodge. Very very bad mistake to make. A move that Teto has cannot be bad, fiend.
And then you attack Head On Assault? HEAD ON ASSAULT? The move that both forms of Teto absolutely have to have because it’s literally iconic to them? Crazy how wrong you can be about something you know so much about. Why is it so important that it KOs besides the spike? Suplex is great and it doesn’t KO. It does a lot of damage and works well with comboes. It’s not so great in a competitive environment if you try to use it on its own… But Brawler is a combo-oriented fighter, so that isn’t what’s important. Also, it’s not “inconsistent for breaking full shields.” It breaks a shield that has been held out for a bit, like seen with DK when the shield broke. If you damaged their shield already, the shield will break. Even if your foe is smart enough to not get their shield broken, you force them to drop shield after you attack their shield out of fear of getting their shield drilled, which can be capitalized on. If it doesn’t snap to the ledge from behind, just turn around as you jump and down special. It’s not exactly Sonic And Knuckles in terms of hitbox but it works, and it’s less predictable than Sonic and Knuckles because you aren’t going up and then down, just down.
Brawler isn’t THAT frail without Ban Donkey Kong or Fcheapbrokenandannoying Jmovethatshouldbenerfed. I mean, using Helicopter Kick? Yeah… But with Sonic And Knuckles you’re good to go because of how good its hitbox is and how far vertically it goes. Unless you’re just really unlucky or make a misplay.
In fact, based off of the counter throw commentary, I think you just think that Head On Assault is unviable purely because of Fcheapbrokenandannoying Jmovethatshouldbenerfed. But you see, it depends on if you’re willing to sell your soul, allowing it to be bathed in the most depraved of darkness.

Good vid otherwise.