Got mysleft RX 460.
It mines all of these: ETH, UBQ, EXP the same speed 12 MH/s, so it is strange why it differs so much on my previous R7 370 card...
Every card is different. The hardware on each model is different so you'll get different results. My older 7950's can push out 23 MH/s (UBIQ) with a slight overclock. Ethereum is different due to the dag file size, as is exp. I get slightly more hash for exp than ethereum.