Why is my hashrate lower on RVN than ETH? (New)

Hello all,

I am very new to crypto and all of this in general. I just wanna know why I get an average of 5 MH/s on RVN and a constant 20 MH/s on ETH with a GTX 1060 6gb. I thought it correlated to difficulty but that doesn't seem to be the case. Can anyone explain to the new guy why the hashrates between the two are so varied? Thanks!