It would be nice if you could do a search for three-letter terms so "ENY" could be used . . . but I digress.
Best I remember it, ENY is calculated based off of the difference between the %Total of the higher side vs. the lowest side. The differential here between the Bish and Knights is only 10.1%, resulting in a small 0.2 ENY penalty to the Bishops.
I'm not sure it is quite that simple (i.e. it might take the differential of both other countries into account), but it is a good shorthand for what to look for when there either is or is not an ENY penalty.