I am very realistic!
I just answer to fellow, who post the link to WIKI, and who believe that the reality follow the WIKI instructions.
Of course, F-15 is a very good fighter, and against SU27 with semi active missiles 1vs1 he will not be afraid, but I am sure also, that 1vs 1 nobody win, because, AIM120 will not reach the target.
Even in Yugoslavia, where F15 was fired AIM 120 from 10-15 km against Mig29 w/o normally working Beryoza, they have missed a lot of them.
Thats mean that in reality AIM120 are not so ubermissile, like in LO, only this.