Like here's a quick list of Falcon's stupidity:
1. Up air: almost twice the damage of Zero Suits, otherwise same landing lag and start up.
2. Forward Smash: has him step forward as the hitbox comes out like 1/5 stage length... legitimately doesn't make sense, he "teleports" forward too, funny to watch in slow motion.
3. Dash grab: almost a half stage length grab
4. Jab: ridiculously good, practically safe on shield, even wins against people holding shield to get pushed out for a "free punish" on every other multi jab... but falcon's finisher is almost as big as his forward smash.
5. Back Air. Guaranteed from ledge trumps (this is a smaller list than you'd think), Kills under 100%, safe on PERFECT SHIELD. 7 frames. Minimal landing lag. Sour spot scales ridiculously slow for an always hit-confirm follow up, auto cancels good too.
6. Up tilt. Why is Samus so unlucky?
7. Weight and mobility specs. Similar/better than Zero Suit Samus. Top tier weight. It's actually kinda obnoxious to see a character with this much weight, with this much range, and this little punishment room with such diversity in both the air and ground. Imagine if Brawl Snake had aerial mobility and his aerials weren't guaranteed DEATH to land with. His smash4 aerials have similar damage and power to them as Snake's did too.
8. Down Tilt... huge, set ups tech chases, also is a kill move. Safe-ish on block.
9. Down Air: definitely the most viable spike in the game. Unlike most other character's spikes, his comes out fast and isn't restricted to just a small area directly below the character. His horizontal hit of it kills too, unlike nearly all other characters who "sour spot" their spikes.
10. Forward Throw, Back Throw and Up Throw are all viable kill throws.
Now let's look at the moves that aren't so noticeably great but are still usable/some of the better moves in the game:
Forward Tilt (tech chase set ups/range is massive), Side-B (raptor), Up Smash (20% and not that unsafe), Down Smash (safe on shield, even the front hit), Neutral Air, Down Throw (not the guaranteed set ups ala Diddy/Luigi, thank ****ing god, this character doesn't need more brain dead quips to his kit) but still nearly always leading into his up air.
What's the only thing letting him down? Having a below average recovery.
No this post isn't to say Falcon is top tier [although I believe he kinda is] just how terribly he's been balanced in this game in ways that should've been way too obvious to any play testing whatsoever.
Any character having this many favourable numbers in their kits would be able to dominate, even if their design has structural weaknesses. Snake had like half, if not a third of the "silly" Falcon has and really all Snake has over S4 Falcon is... grenades (these cannot be underrated though) and up tilt.