None of this refutes the argument that the optimal way to get as strong as possible as efficiently as possible is to progressively overload full-ROM, compound movements, like the squat, deadlift, and press. And the best tool yet invented to progressively overload full-ROM compound movements like the squat, deadlift, and press is the barbell.
I do think gymnastic upper body development is superior to what can be accomplished with barbells. We could argue that one if you want. We're on the same team for the lower body.
I just noticed you also mentioned the press. Ah well.
I used to seriously post here, now I prefer to troll.
And even Rip's novice programming includes chinups. He's also stated that dips are a borderline "main" exercise (as opposed to an accessory exercise). Personally, I program my weighted chin-/pull-ups and dips according to the same framework as my squats, deadlifts, presses, and bench presses.
The point of the Rippetoe article was that strength is useful, general, and best created by sticking to progressively increasing your ability to perform the basic, main, compound lifts, and programming them correctly, not "tricking" or "confusing" your muscles by doing squats one week, bulgarian split squats the next, bosu ball goblet squats the next, and seated leg press the next.
I'm reading this via my phone, so instead of typing up another response I'll just say I agree with everything Rich said.
Better comparison would be if you tied a rope around a pulley with weight on the other end, and see who could pull more weight below their chin. I'd bet my money on the fat powerlifter.
I also disagree with Rippetoe about "assistant movements" like dumbbell curls or laterals, they don't need to be easy isolation movements, but can be relative heavy compound exercises as well! Ever tried heavy overload dumbbell cheating curls, using the whole body? Pick some 80 or 90 pounds dumbbells and do alternate standing curls with a supinated grip moving your hips explosive to get up the weight and slow down on the eccentric. When you can’t do any more reps, change to a hammer position and do cheating hammer-curl for at least 10 more reps! This exercise is a movement that works pretty much the whole body, and you can progress up to the really heavy dumbbells 150 -200 pound if you like, and you may feel sore in your whole body the day after…
A guy that can squat 300 pounds will have no trouble doing pistol squats. A guy that only does pistol squats will probably need an ambulance if he tries to do a 300 pound squat. Being stronger makes everything you do easier.
Some of you may die, but that is a risk I'm willing to take.