Hi, it actually makes sense to have benchmarks per coin instead of per algo. It may be a bit of hard work to tweak this in the programming, but in the long run us (users) will have a more down to earth expectation of what we would be earning and the profit switching would be more accurate.
I'm not sure why you would want this. Awesome Miner calculates your earnings based upon your current hashrate, and current price price/difficulty of the coin.
If you are getting a different hashrate for two coins on the same algorithm, then something is wrong with you system or setup.
it makes sense only with daggerhashimoto because of DAG size, lower end cards get better speeds on newer coins.