Mining Questions

New to the mining game running a AMD rig, Mined on Unmineable was getting around 45mh/s switched to my understanding of a pool. 2miners running NBminer, I noticed that MH/s is was lower then in unmineable. Again im trying understand a bit here, so am i earning less coins on NBminer then Unmineable. Also is unmineable considered solo mining ? thanks for the input in advance yall appreciated !