Nope, I don't know.
Don't want to take any random guesses either, and to be honest it really doesn't matter who it is, Rapid is just HORRIBLE at the matchup.
I mean, second vid last stock... did she not see that grenade? I saw it a full 4 seconds before it exploded =p and yet she got hit and died from it....
They don't watch for the explosives, the Snake obviously knew that they would:
1. Take the best choice to avoid a tech chase (roll away)
2. Do the opposite (roll behind)
So the Snake player got 2 easy dthrow tech-chases because they knew how she would react, you don't want to take the smart path all the time! If she did a getup attack, they would have hit the Snake.
She tried to have a utilt battle with Snake, sorry... that just doesn't work.
She kept jumping into Snake's nair + you can DI out of that and she didn't.
Way to many mistakes.
//assuming Rapid is a female due to being in a group "Venus Flytrap (The Ladies of Brawl) x]" which is a group for the female smashers =p so... yah..