Title & Thumbnail sum this topic up pretty well it's quite literally just me going over how I think a fight between Madara and a Healthy Itachi would actually go.

Intro: 0:00
Itachi's "Arsenal" is outdated: 0:56
Establishing a Version of Madara: 3:02
Itachi Holds back in his fights: 3:59
Totsuka Blade vs Madara: 8:49
Itachi's MS abilities vs Madara: 9:27
Healthy Itachi's "Limit": 15:32
The Winner: 17:58