Okay, here goes
I took a burst of 28 shots.
Short version...
Three out of focus
Three close, some sites would call these in focus, but I'm picky!
22 in focus
I used the X-T20, on general AF mode with a large AF zone, it picked up the face a few times when he got closer.
So I guess that would be a hit rate of 83.9% (if I weigh it as 1 point for sharp, .5 for partial and 0 as a miss... 100/28 * # * x, ie
3.57 * 22 * 1 = 78.57), lol, I know maths!!
Here is the overview, the key is:
No colour : In Focus
Yellow : Close but no cigar
Red: Nope, thats a binner!
All shots below were at 100% zoom, but pretty much all would pass if left at the original size, well except 28.
I'll throw out a few examples to show what I consider in focus, close and totally out of focus.
Number 6 - In focus (but pretty far away so gave it some scope)
Number 7 - Out of focus
Number 13 - Partial
Number 19 - In focus
Number 21 - Out of focus
Number 27 - In focus
Number 28 - Partial