I have KBomba version of Minercontrol and his profit chart. StuffOfInterest made the original.
On the MC it shows the signals rate real time and nicehash throws out a lot of high payout signals for 1 minute to get auto miners to switch there...then the price drops to real time and miner is locked there for what ever settings you have except ..... MC It calls them outliers and bypasses them.

The auto pools do it once in a while but at a realistic price.
yep, partially that's why i don't test anything multi-algo - it's a tricky shit.
but comparing algo profitability is relatively objective
Yup and in constant flux.