[zlsa]

There's not a huge number of datapoints yet, but there are several Falcon 9 boosters that have flown >10 times (including two that have flown 14 times.) I'm quite confident in Super Heavy at least handily exceeding 10 flights MTBF.

[hinkley]

MTBF is mean time. So “a few over 14” isn’t anomalous if the mean is ~10. In fact it’s a bit low.