firstly those statistics are BS, 2 F-22 dont have enough AAM to take down that many fighters, and if they went down to cannons Su-27 can outmanuver F-22. F-22 aren't invisible and are still dectectable to radar, the invisible term is partly true, partly marketing talk and partly fear factor. Its stealthier then normal fighters but not a true stealth platform. Numbers do count, true that F-22 has TVC but stealth platforms have limits and their design. J-10/J-11 within visual range have a good chance 1-on-1.
With China airspace its SAMS are also a threat. True USAF have F-16,F-15,F-18, and so do the ROCAF with F-16. But large number of ROCAF are not currently flight worthy. And not a larger percentage of USAF fighters are within reach of Tawain. China are closer to their own waters so they have shorter reach to refuel while USAF closest refuelling point is Japan or the naval carrier. But naval carrier will be in combat by PLAN. J-10/J-11 will be the muscle with J-8 launching AAM from distance as the missle truck.
F-35 aren't that manuverable and are pretty heavey. They arent designed as well as the J-10/J-11/F-15/F-22 for air fights, and they arent in service nor will they be in larger numbers such as the F-22.
China wants to end the fight before USA gets any where close to the combat field, but in the end lets never hope that China will face USA in war, or that their will ever be a war fullstop.
1. I don't see why not. 2 F-22's vs 16-18 other fighters. The two F-22's have a collective total of 12 AIM-120's and 4 AIM-9's. 16 missiles right there. Add the 20mm cannon, you can probably wax 1 fighter with the 480 rounds in the gun. All of this plus the fact that you probably never saw the F-22 coming.
2. The only times the F-22 was 'shot down' in exercise was due to a mulligan; a enemy fighter just happened to re-spawn, and placed his gun sights on one. While that fighter respawned and nailed one F-22, his wingmen were all shot down multiple times.
3. The F-22 is also a surveillance platform; it has a excellent radar and datalink capability, and has acted as a sort of a mini-AWACS to other non-stealthy aircraft, helping guide other aircraft into better positions to gain an advantage.
4. The F-22 on radar is about the size of a small bird. Easily small enough to merge into random clutter. This aircraft is designed for initial penetration into heavily defended airspace and achieve air dominance. That's why it is called an air dominance fighter, not an air superiority fighter. Just one can ruin someone's day and put a real wrench into someone's plans.
5. Chinese SAM's cannot cover Taiwan effectively; it would be at the edge of the range of current SAM systems in use and in development, and would have a low hit probability, plus you have both friendly and enemy aircraft operating in a not very large airspace. The risks of a friendly fire incident is extremely high for SAM batteries in these circumstances.
Not to mention that known SAM sites would be selected as targets for initial strikes; US doctrine in the past couple of years has been to degrade enemy air defence and C&C systems first to throw the enemy into confusion and degrade their ability to respond effectively followed by strikes against logistics, followed by strikes against military units. Destroying or degrading one's ability to achieve situational awareness and be able to fight effectively is a skill the US has honed over the years.