sure you can say zoro > luffy in this regard with basic CoO as Luffy is much worse and i even mentioned that in the thread but unlike sanji zoro didn't sense the enemy before he sensed the projectile that was aimed and shot at Tsuru was it?
Sanji did that even before the guy even properly aimed at them let alone shooting a projectile
So Sanji> Zoro in CoO given aforementioned surely yea?
Ye if we go by
your scaling, it essentially goes
CoA: Zoro > Luffy > Sanji
CoO: Sanji > Zoro > Luffy
But IMO you look at CoO wrong. The haki's potency doesn't work the way you think it does.
I think
all of M3 can pull the sniper feat if they have their CoO active in that manner.
CoO is not as simple. There are multiple factors to it; and number one is uptime and what level of uptime you're aiming for and for how long.
Are you actively using it to seek out dangerous intent in your vicinity?
Are you using it actively notice any changes new presence in your vinicnity?
The issue with Luffy is that his uptime is shit. He's barely using his CoO. Even FS. Even when he's in middle of combat, for majority of it, he can't keep his FS up.
For example, Fujitora is someone with 100% uptime. Though even his level might vary depending on what he wants to do during those uptime. CoO depends on intent. It's like how it's very easy for M3 to spot Caribou after actively looking for him in an instant, but otherwise they can't sense him when he's next to them on their ship.
And CoO is more than just this anyway, imo there are two applications of it which vastly differ and one can be better in one while being worse in other. Reflexes/reactions and sensing.
But that's a whole new debate for another time ig.