I'm confused...
If SLS has never flown (and from what I've read here, looks like it's quite a way off from the first launch) then how can it be compared in a meaningful way to Falcon Heavy?
That would be like an aircraft manufacturer comparing a rival's in-service airliner to their own pie-in-the-sky, not even on the design boards yet, supersonic sub-orbital intercontinental wonderjet...
What I don't really understand is why, given how they managed to iron out most (if not all) of the problems with the Saturn 5/Apollo combination, they don't try building a new one with modern manufacturing techniques and materials rather than reinventing the wheel completely... it might not be exactly what they want/need but it would give them a current data to work with and it's better than PHBs wasting money in meetings arguing over how to waste the money quickest.
I look forward to any genuine rocket scientists who may have wandered in by mistake explaining why I'm wrong, and the rest of you giving me the giggles when you start quoting manufacturer's estimates as though they are accomplished results...
Biting the hand that feeds IT
