1) My cube wasn't nearly as good at the time
2) The first two solves were sup-4 because of stupid nervousness / lookahead failure
3) The third solve actually should have been sub-4 by a large margin, but then my cube jammed badly in the middle of parity alg (see #1), and by the time I fixed the jam I couldn't figure out where I was in the alg and had to re-solve a whole bunch of stuff :/