system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Which version of Captain America is physically the weakest, but who is still "Peak Human" and gifted super stamina due to the SSS's effects on endurance/aerobic strength and lactic acid?

It definitely isn't the MCU helicopter-curling version. It can't be the 616 or Ultimates versions where they blow up tanks by throwing the shield through it/"see faster" (and other bs like that), or survive a drop from a massive height directly onto concrete like it's nothing (I understand heightened durability as perhaps being a byproduct of being a peak human but that's nuts).

There's gotta be one version that is still a peak human in every sense of the word (matches or only very slightly exceeds real world strength, athletic, or general physical feats) while having super stamina but is less absurdly OP compared to 616/other versions of Cap.

Also I apologize if Ultimates version is the most accurate.  I seem to remember him being OP but haven't read it in years!
gpt
MCU Captain America could lift about 970lbs, evident by him curling a Eurocopter in Civil War and lifting Iron Man's suit at the end of it.

616 Captain America could consistent lift about 800lbs, with recorded maximum lifts about 1000+lbs

Ultimate Captain America is the insanely strongest of all the big three. Consistently lifting at about 2-5 tons and Nick Fury once said Capt could bench press a Toyota.

Most iterations of Capt based them on 616-version. Therefore, MCU Capt is relatively the weakest of them all.