What even is "Healthy, alive Itachi"?

I know - another Itachi post. Sorry!

Like, when we say healthy, are people just defaulting to giving him 2x the stamina, endurance, and chakra quantity than his sick version? How much do we upscale him from his sick version? He's still going to suffer from vision loss and would likely lose his vision faster than 5ks Sasuke (please note, I'm not including the use of tsukiyomi here).

To me, his edo version has to be his strongest version due to being able to maintain a permanent Susano. Tsukiyomi seems to have the same strength in all versions, which is his best hax. While some edos are weaker than their alive versions, Kabuto had improved it and there was no direct context provided to us as to how much weaker they are. Some, like Madara, were even buffed in some aspects of their power.

Whatever taijutsu and chakra improvements he gains won't be as beneficial to his tier as the edo buffs. Edo fits much better to his kit.