Coyote gen 3

The gen 3's have a static compression of 12:1, that's the biggest reason for the high numbers on a compression test.

Just for reference, the gen 1 and 2's are only 11:1

Cam timing will also affect the readings. Lobe separation angles and valve overlap plays a big part. Engine masters did an episode where they explained it and how it worked, but I don't remember the specifics.
Also the weather plays a part, if the barometric pressure is high, it will give higher than normal readings.

In the end I think it's a healthy engine, the readings are within 10 psi of each other, whereas 10% is allowable. That engine is around 250 psi so a 25 psi range is acceptable, you got 10, so you're golden. Buy it and enjoy your car.