Of cause its better than nothing. But 1gpu and 10hours - at least 10-15% is luck difference.
Luck is not a factor in these tests, all 3 miners are on the same pool mining identical blocks their luck is the exact same .
Are you serious? You can run 3 instances of the same miner on these gpus and easily get 10% difference in shares.
This is randomness of the Algo, not luck of hitting blocks. This randomness *should* even out over time. This is wha I am doing many rounds and will only make conclusions based on a large dataset. If one miner is always 10%+ ahead of another, will you really argue this is luck and not a real advantage of hat miner?
If it were just just luck/stochasticity, wouldnt you expect not to see the same winner each time?
Also, share number is completely meaningless. It can be manipulated by changing share difficulty in command line.