Your different hash rates are based on 2 things.  First, your real time hash as seen by your cards on your side, and the lower number is the hash seen by the pool for your successful hashes. Pool will be lower always as your submitted shares will never be exactly what you're hashing at.

As a request for the pool operator, is there a way you can add the newer equihash coins to the multipool?  Zencash and Hush would fit in well for the multipool to swing to when their difficultly drops.