Soldier rank and AI capabilities

Ok, so I’ve just started training my first 5-star rifleman. I’ve got four more 4-star riflemen currently working to max out their stars so they can be trained to another 5-star. My other forces are currently working up through three and into four stars.

My question is this: when I get my 5-star rifleman back in a few hours, am I really going to notice a difference?

I’ve read from people saying that AI bots get smarter the more stars they have, but is this really true? The bots seem pretty stupid, and I’ve never really noticed them being any less stupid if they had 4 stars than if they had 1 or 2 stars. Have the devs actually posted somewhere explaining what about the AI bots actually gets smarter with more stars?

Or is the only advantage of having more stars the fact that you have more perks? Having more perks seems to really only help when it’s a player controlling the soldier, since they’re so stupid as bots that other players seem to rarely have any trouble picking them off.

Anyhow, are there any posts by the devs explaining what the improvements are to soldiers based on how many stars they have, more than just having more perks?

more stars means bots behave more op is just an assumption i guess no dev notes on the ai!!!

Well for a fact, rank 1 soldiers are unable to shoot downed enemies (those that need medkits to “revive” themselves), while rank 5/premium ones can.
I do not know at what level they gain that ability, or whether it is limited to premium squad soldiers only (as those do get double the perk capacity compared to normal rank 5 soldiers as @627636 has shown us, maybe he can tell us more about his experiences with rank 5 soldier AI?)