To put it in context, the average winning speed down the Fort William track is 22 mph; down Mont St Anne it’s 24mph and down Champery it’s actually only 14mph! (OK so at Pietermaritzburg the winning average speed was 28mph but it’s an exception!)
Citation? I would have thought it faster.
I operate a 32, 11-36 setup and I ride a lot of high places in Scotland, mostly over 914m. It works a treat for that.
When my commuter bike broke and I had to use that for a spell, it was a pain. For trail centres / easier riding / racing, I’d definitely go with a 34. For hitting steep stuff, 32 is all you need. If you’re spinning in 32:11, you definitely don’t need to go faster!
EDIT: Citation found (at least for Fort Bill). I stand corrected:
Pretty flipping fast still.