For a moment there, it looked like we had an actual benchmark going. But perhaps not.
time HandBrakeCLI -i /Downloads/EEVblogTestRender2Min22.MTS -t 1 -c 1 -o EEVblogTestRender2min22-SonyAVC-1440x1080_a.mp4 -f mp4 --strict-anamorphic -e x264 -q 22 -r 25 --cfr -a 1 -E faac -B 192 -6 stereo -R 48 -D 0 --gain=0 --audio-copy-mask none --audio-fallback ffac3 -x ref=2:bframes=2:subq=6:mixed-refs=0:weightb=0:8x8dct=0:trellis=0 --verbose=1
Ran in 1m46s on my PowerMac (2008 vintage, 8core 2.8GHz Xeon. MacOS 10.7.5) It did claim to be using most of all 8 cores... That's not blindingly fast, compared to what other people are seeing, but it's also not dramatically slower as per "The Apple Store Experience."
(is that I reasonable test? I thought Dave said he was going from the MTS to something else, and THEN running handbrake on it.)
My wife's newer but less tricked-out iMac (3.2GHz i3 with 2C, 4T) did much worse: 3:31 or so. Don't get one of them!