I know many cope with "muh short guys are stronger than tall fags" but that is a cope.
6'2-6'5 frame maxxed Tyrones.
They were bench pressing 450-500 pounds
overhead pressing 225 and more
squatting 500+ pounds
It's a cope that manlets are stronger.
I think perhaps you are misunderstanding the roots of this idea, or perhaps reacting to people who misunderstand it.
Small size is often more about RELATIVE strength. IE it's easier to squat 4x your bodyweight if you are 5 feet tall than if you are 7 feet tall. That doesn't make your ABSOLUTE strength any higher though. If the 5foot guy is 100 pounds and the 7foot guy is 200 pounds, the 5ft guy only needs to squat 400lbs and the 7ft guy needs to squat 800lbs. So despite having identical "relative" strength, the bigger guy has more ABSOLUTE strength. The 5ft guy could squat 500 and have MORE "relative" strength, but still be 300 pounds less "absolutely" strong.
Now, given identical bodyweights and different heights, the small guy has less bone and other tissue to account for his weight, so more of that weight can be muscle. Given different heights and both having the same % muscle, the taller guy will be stronger.
A third factor is the length of certain levers, which is more about the ratio of your body parts to each other than it has to do with absolute size.
Basically: if you have a long torso, if you're bending over with a bar on your back, that's a further distance from your hip joint so it takes more strength to hold it that way. This is why guys with short torsos do well in squats/good mornings/deadlifts.
Also: if you have long arms, you don't have to bend forward as far to get your shoulders close enough to the ground, so that's why short-torso long-arm guys do better tat this lift.
Short-arm thick-torso guys do better at bench press though, because they don't have to move the bar as far. That has nothing to do with their absolute size, of course, but more like their measurements relative to whatever weight class they're competing at.
Basically, if you take a pair of 200 pound guys each at 10% body fat and who have equally twiggy legs who focus only on arm developement... if one of them is 4ft tall with 2ft long arms, and the other is 6ft tall with 3ft long arms, the short-arm guy is going to kick ass at that bench press simply because of how that lift is designed: he doesn't have to do as much work, because he only has to move the bar 2/3 the distance.
Outside the design of the lift, the long-arm guy will function better in LIFE though, because he has more overall strength. He will punch harder, because his punches accelerate over a longer distance.