I think EB's Bats eyes are decals. they don't seem painted to me which was disappointing. I know their BD T800 has painted eyes though as they made it a point to show how they've upped their production paint apps using the BD T800 as an exmapleYou should be able to tell if they are decals. Hot Toys PERS eyes are decals which explains why the eyes are not exactly parallel on a lot of figures. I am pretty sure from what I remember the EB Batman ones look painted on and I thought the paint job for the eyes were not as realistic compared to the faceplate. Nevertheless, overall the sculpt still looks very life like!
PERS eyes, however, aren't decals. If I recall, when PERS was first announce HT said something about them being miniture plastic eyes similar to glass eyes.
you can see in this pic, it's not a decal. There's depth in the eye