Interesting to see the VTOL engine is almost twice as reliable as the CTOL engine. Counter intuitive. I wonder why that is.
Statistics. Ratio of one airframe type to the other.
Nope; of the first 100 F-35's delivered by 2013, 44 were the A and 42 the B.
Besides that, if it was a down to a small sample size the noise would be like the start of the program, up and down.
The B engine really must be much more reliable than the A model.