Awesome Miner uses coin statistics provided by WhatToMine.com and CoinCalculators.io by default. If a specific coin is reported incorrectly, it's because of one of these sources isn't providing accurate information.
Awesome Miner can improve the coin statistics by filtering out low volume coin exchanges. Go to the Options dialog, Statistics Provider section, and define Minimum exchange volume (BTC) to a value like 0.001 BTC. This will exclude many of the smaller exchanges and the result will be a more realistic revenue display.
For more information, please see Coin and profit statistics.