After reading recent posts I just wanted to throw my opinion out there, as I see many have lol.
It seems a lot of people are caught between theory and tournament results, and even in the theory aspect people either focus too much on the pros of a character or everything terrible about said character. For example, in positive theory spacies with their shines are hands down the best characters in the game (Lucas included imo). On the negative side spacies can be combo'd and killed withe relative ease. They are combo bait to a majority if not the whole cast.
So what about tournament results? There is not an overload of tourney wins from spacies, does this mean they aren't the best? Mario didn't make top 8 at Apex so is he a bad character? Of course not, consistency form tournaments across every region help dictate which characters shine (no pun intended) more than others. There have been very few tournaments as this is a new game, so it needs time to develop.
In regards to development there is Melee. Fox, Falco, and a few other characters stay true to their Melee form in PM, so in theory these characters should have the same influence on the metagame as they did in Melee. However, this is NOT the case. Look at a strong region like DFW (Texas bias sorry), they have so many ways to dealing with space animals to make them not even that huge of a threat to the community there. PM's metagame does not revolve around shine how well you can deal with spacies. I don't know where PM is heading, but more than likely it is not going the Melee route.
So yes, I believe Fox and Falco are the two "best" characters in the game, but I know they will not be as dominant in PM as in Melee. No player is perfect, no one can waveshine everywhere and never get hit as Fox, and no one can consistently turn every hit against a spacie into a stock. They are glass cannons, if they mess up they will get punished hard, and if you mess up against them, good luck with that.
tl;dr: This isn't Melee, and none of this matters because tier lists turn people into whiners instead of addressing real issues like why I can't main Pichu.