I'm not out to prove anything (like I said, the MiG-21 should be harder to spot), I'm just asking what other people think.
We set up an AI formation with MiG-21, 29, Su-25, F-15, 16 while we flew around it, and I thought about taking screenshots.
The problem is, it's much easier to spot the MiG-21 while it's flying in a straight line next to a F-15, so these screenshots are not very useful.
It's better to use a "real" scenario. Like, you and a friend agree to meet over Kutaisi city at roughly X altitude and then try to find eachother with Mk I eyeball.
It's fine to use F10 map or RWR so you know roughly where to look.
Fly against F-15 for 30 minutes and then against MiG-21 for 30 minutes, and see what you think. The big difference is when you try to spot them against the ground.
I thought of doing this, but I think you lose the "dynamic" parts of a dogfight, like scanning for moving objects while you're maneuvering. And I think this makes a difference in our discussion. Better to test it in a "real" scenario! :)
P.S. yes we had model visibility set to enlarged.