I actually didn't expect that... this made me legitimately laugh.
For one thing I'm going to say, and there's going to be like 50,000 reviews saying this same exact thing, but it really does remind me of Egoraptor's older work.
But now to actually get on with the review, I enjoyed it. The art work is very sloppy and the animation's kinda choppy, and usually, to the average viewer, that is an instant turn-off and they'd think it sucks, BUT, to me it looks like you actually know how to draw pretty well, and you understand WHAT you're doing with the animation. Like how they move around and switch positions a lot, it doesn't look off or out of physics, it just kinda looks rushed. But it's funny that way, and I for one liked it.
As for humor, I just thought it was ridiculous, stupid, and hilarious. The parts with Peppy especially. It's been a while since I've seen something like this. It's executed pretty messily, but it just makes you laugh because of it. Some people have made messy and rushed videos before, but they just look bad. Like REALLY bad. But this is somehow actually passable. Again, it looks like you actually know what you're doing.
As for voices, nothing special, but nothing too terrible, plus the overall quality standard of the visuals sorta matches up with it and it fits.
So all-in-all, it's a pretty low-quality-standard video that's executed just perfectly, and it's actually funny. Though I'm not usually a fan of parodies, Starfox hasn't been done too much, so I'll give it to ya.