I'd much rather ride up a 3.5km 8% hill on my fg then down it... but I'm fit and reasonably geared. The point we're trying to make is, the longer the hill, the worse the descent will be. "Reasonably geared" and "fit" are sort of blanket terms, I realize.

Me: 42t/16 or 18t cogs, ride both equally
155lbs
300w FTP
competitive cyclist

you: fatter and weaker? Nothing personal, but if I was capable of less w/kg I might agree with you. We're young bucks here!