there will not be more than 5 i guess...and at first place, there is no comparision with F22 since it is highly classified and has been in service since last many years...the only Gen 5 FJ.....and by d time we all come up with our own Gen 5, USA would ve developed something that wuld just kill these birds with pin-point accuracy.....so think not just big but bigggger...having bigger economy than US wont make you innovative and tech lead!