The question is, is RoF as playable with 100 A/C in the sky? And CoD certainly has been proven to be able to run, playably, with 100+ A/C in the sky at normal game speed.
It's sticks and stones; can they really be compared?
On what, precisely? I have seen the syndicate "demos" shot using the FMB to show hundreds of planes, but I haven't seen anything showing actual gameplay with that many aircraft. If there is such a thing, please point it out because I must have missed it.