I got a little inspired by the "down smash tier list" and decided to make one for pummels
so first i decided to see how much damage can they approximately deal with a single pummel and listed it down

After that, i've checked how long it takes for them to execute one pummel after another, so we can now instead see what is their damage over time, assuming every single input was frame perfect

i'm unsure if this "decimal" percentage is from the pummel staling or not, but i suppose it's alright either way

(also feel free to point out any mistake i've made i guess, i didn't really take a rest from this so i bet i made a mistake somewhere)

From what I see there's a small flaw in one character (probably a a lot but I will only point to one) Conventionally 's pummel does up to 3% and some decimals, so take a check for 's one with the frame rate issues or another stuff you got there, also it'll change the dps for him.

If i understand you correctly, you're saying that luffy's pummel sometimes deals 3%, and then only 2% for a few hits before doing another 3%, right? Because yeah that happens, the game seems to round up any decimal above 0.09
for example if it's 2.12% it'll display as 3%, but 1.06% stays as 1% (which might explain why the 1% pummels deal 2% only in the second hit but not the first when at 0%)

i'll just put down what i noted down for the frames of every character's pummels i guess


So i did further testing with a player 2 sandbag on group smash (with energy tank enabled to reset damage and check for staleness), i can safely say that pummels do stale, although not from using the pummel itself, but rather it instead seems to use the staleness of your last non-projectile move used
for example - if you spam mario's up-smash A LOT, his pummel damage seems to drop to about maybe 0.36% (it sometimes took 3 pummels just to deal 1% total), but after a single jab (or fireball) it was back to its normal damage
or after spamming jab with Marth, his pummel damage seems to have been reduced to about 1 - 2% rather than the usual 2 - 3%, but after an up-tilt it got refreshed
throws that create projectiles (such as Fox) sometimes doesn't completely refresh staleness
yeah this got me a bit interested now, maybe i could look more into this later on

edit: oh yeah and in the tiers for their DPS, characters in the same tier are in no particular order (aside from 2 or 3 which i think was mostly coincidental with the order i checked them), perhaps i'll correct that later on aswell