As I told you in another Discussion, you're on a wiki. You can check this for yourself. To answer your question, there are 14 different Sukhoi aircraft depicted in Ace Combat (15 if you include the T-50 PAK-FA).
I'm locking this thread since your original question has been sufficiently answered. If you want to ask a different question, you can start a new thread. But please use the wiki since every question you've asked is already answered there.