Stealth is a way overhyped technology. It can be marginally effective against microwave active systems, but does nothing against long wave active rigs. The cost of defeating stealth is a fraction of the cost of implementing it. There is really only one kind of stealth that is effective in the real world and that is not radiating and having good passive systems. The Russians excel at this. Their passive sensors are powerful and their passive missiles are the best in the world. Until recently NATO didn't even try to develop passive air to air missiles. The SU-27 has 90% of the F-22's flight capabilities at a fraction of the operating and capital cost. Three SU-27s, especially with American engines and avionics, would be several times more effective than a single F-22. The most important qualities in an air-superiority fighter have always been range, speed and weapons delivery. The SU-27 is faster than the F-22, has a greater combat radius and except for Beyond Visual Range, is a better weapons platform. BVR has only recently become at all useful in environments where we enjoy total air superiority and perfect information. In a full on war with a relatively numerous and organized enemy like Russia, it would revert back to a hypothetical combat mode. And once you are in visual range, those faster SUs can catch you and deploy those amazing dogfight missiles of theirs.