Instead of focusing on such secondary issues, political and defence decision-makers would be better off contemplating why the most successful air forces in the history of air warfare are planning to make the F-35 the centrepiece of their operations for the first half of the 21st century.
Answer: They bet the farm on the '35. There's no other '5th' generation fighter on the (Western) table.
Can't see G6 entering service before 2030 either, given the length of time the '22 & '35 took from 'prototype' (YF-22/X-35) flight to in service, both around 14 years.