They are completely different to me as well, which is why I don't record rumpy-pumpy on runkeeper, or wear my HRM/Cadence/GPS watch for it.

They are evidently not completely different to the users of fitbit who are telling the world about it, because otherwise they wouldn't be overtly and deliberately stating (on a website whose purpose is to share activity details with the world) that any particular 2m52s of increased activity was due to squelching.

Please let me know if I've missed some crucial point regarding fitbit usage, because I really can't see how this is "unwitting".