Never underestimate how good people are at making fakes.
If you want to continue to be in denial, be my guest. But no one would ever spend hundreds of hours meticulously reanimating Bowser for a few second video, let alone attempting to match his attacks knockback featured in these videos (mainly, firebreath). It would be impossible to replicate Bowser's firebreath
exactly in Brawl without there being a mistake in how it hits the other person. Doing that on top of modelling, animating Bowser Jr., Shulk, and Lucina. It is real, as far as I'm concerned.
There is literally no way to even replicate Bowser's firebreath Smash 4 graphics and animation in Brawl, the best you could do would be changing the color and making the breath bigger but it would still
animate the same way it does in Brawl -- which would be a surefire way to know it's a Brawl mod.
This? This is not a Brawl mod. You could not create what's being shown here in 2 weeks. No way. No one in the Brawl modding community
is this good.
Edit: Hell, another example that this isn't a Brawl mod is that one of Bowser Jr.'s attacks is a projectile. You
cannot create completely new projectiles in Brawl without some really hackish stuff. It wouldn't look
this good at all.