To answer your question hereford, yes the jsf is the x/f-35.
To address the underlying issue, the F-22 is much more capable than the F-35(x-35, from here on, F-35). The F-22 easily outperforms the F-35, but the F-35 is intended to be a fighter that many countries possess(fuck all that noise, America should have the best fighter, shit, we're paying for most of the F-35). I can't think of a reason to replace the F-22 other than to give other countries an even playing field(again fuck all that noise). The only thing I can point to is one world gov. Sounds crazy, but whatever.