Ok, you clearly don't know PT very well. Let's start at the top.
Yeah, because you've seen my Pokemon Trainer before and you can make that distinction.
First, it's not just versatile because of the three different pokemon. Zelda is also multiple characters, both with very distinctive and diametrically opposite playstyles. That's 5 different characters as a team instead of the usual 2, for a total of 6 different possible combinations which means that this team can adapt and change to fit the situation.
No offense dude, but having 6 different combination is still useless. You know why?
You cannot change the combination on the fly without wasting time. Yes, theoretically you can have the right combination for any occasion. The downside is that everytime one of your Pokemon dies, your combination reverts to a sub-par one. And in order to get it back, you have to switch. And if you do, you're putting yourself in positions to be punished. Plus, it doesn't matter if you have 5 different characters. Since
all of those characters suck in competitive play. It doesn't matter how varied your team is. Even if you have the best combination for the given situation, a team of high tiers will still run all over PT and Zelda.
Next, you cannot just say flat out that switching is not safe. If you're an absolute idiot, you're right; it isn't safe. If you know how to switch correctly it's perfectly safe. You don't switch near somebody. You switch after dealing some knockback, which is pretty simple for every character in the game. If you mained PT or played any good ones, you'd know that switching isn't so terrible. If you switch right, you won't get punished hard.
This is doubles. Not singles.
In singles, it's a viable strategy to knock your opponent far away and switch. But in doubles, you have to worry about the 2nd opponent. You cannot switch without being punished. (Unless you and your partner have insane synergy. Or you're on Smashville.) And you cannot expect Zelda to keep your opponent off your back. If you do, then that's overly optimistic.
Finally, you say all three pokemon are not good characters.
They aren't. Why are you even challenging me on this? The Pokemon simply are not good characters. They are not the worst characters in the game, but they are not good. They are not average. They are sub par.
Squirtle has one of the best aerial games in Brawl
No he doesn't. He has a good aerial game in comparison to Charizard and Ivysaur. MK, Gdub, Wario, and Marth have good air games. Squirtle's air game is decent, but saying it's one of the best makes me question exactly how much you know about this game. Squirtle gets utterly shut down by any character with range.
plus his attacks on the ground are also extremely fast
That doesn't make him good. A lot of his ground attacks have no range and lack priority.
Ivysaur is amazing at racking damage and has an amazing spacing game.
Ivysaur is only amazing at racking up damage if you run into Bullet Seed. If you take away that, Ivysaur is the worst of all the Pokemon. He's total deadweight against many characters, and has a terrible recovery. If Ivysaur was a standalone character, she might be the 2nd worst character in the game.
He can edgeguard just as good or better than any other character in the game.
So that's why you think he's good? Because he can edgeguard?
Everyone can edgeguard. Admittedly, some characters do it better then others, but Charizard is nothing special. It would be great if he actually moved fast in the air. But guess what? He doesn't.
And if you are just saying they suck because of fatigue, you need to know that it isn't all that big of a deal.
Fatigue has nothing to do with why they're bad, although it helps if you want to camp them.
I just think you need to know PT a bit better before you just flat out dismiss him as bad.
I think you need to know what you're talking about, before acting like I'm incompetent.
So killing is something to never worry about.
