Is there something I don't know about Mission editor?

[Red Hammer]

:huh:I don't know why? the mission ED have given us on disk is harder than what I edited myself.

for example, Su-27 escort bomer, 2 Su-27 vs 4 F-15.

the F-15s know to attack me from different angle.

But what I edited, even I put enemy on the hightest AI, they will keep themself in formation untill I am in range.

So is there something I don't know about Mission editor?