It happened to me once, but it's kinda unreliable. It's lulzy if it works though, as my friend nearly fell on the floor laughing after taking my stock.
I THINK his DownB is actually made up of 2 hits, first a normal hit, then one with tons of shield damage. I think you can shield the first, then roll out of the second one... or so I've heard. If that's true, then it's kinda meh.
Falco garbage tier no bread.
Also on a more serious note, his air lasers don't cancel when he hits the ground anymore. RIP laser spam. Also Dair looks kinda wack.