Originally Posted by
Bob Ross
I got the impression from the OP that he wasn't describing a hypothetical but an empirical (and routine) situation...and unless he lives in some wonderful mythological land where all descents are straight downhill dragstrips, they're all "technical" to some extent ...which is a long way of saying, if OP is getting dropped on descents it probably has more to do with cycling technique than physics.
+1 And on recreational group rides, it's best for the group to stretch out anyway, since not everyone has the same descending abilities or high-speed nerves.
The best descenders in the pro peloton are not necessarily the biggest riders; Cadel Evans was able to gain a lot of distance on his pursuers by descending so well. Paolo Salvodelli won the Giro because of his descending skills.