deselys
It always depends on the rules used during these training fights.
If there are no rules, the F-15 usually wins, even when outnumbered, because the F-15 is a purebred, fully integrated air dominance SYSTEM. That is the sort of dominance the USAF expects to get from the F-22 against the latest generation of fighters plus the next generation of either manned or unmanned airborn weapons systems.