Hello there.
Let me put down my thoughts on this but first I need to address that I am very new on this "mining" scene.
All of you, measure your hashrate as one unit and then you start calculations and compare graphs.
I think this is completely wrong. Each card has a x hashrate. Middlecoin has a fixed vardiff at 512.
This mean that a low hashrate card will be very difficult to have shares against a fast card.
So, having this in mind, consider that Bob has some rigs with many low hashrate cards while Franks has less and faster cards.
On some coins Frank will have share faster than Bob before the coin switch.
Another example is that for 3-5min Bob lose connectivity or has more rejects than Frank but in this time-frame we mine the most uber profitable coin ever.
Frank will have more shares than Bob even on 3 hours average graphs looks the same hashpower.
My conclusion, with so many vars you cant handle/investigate/guess why Frank earns more than Bob or the opposite.
I hope I am not wrong. Thanks.
Sad to say but you are wrong. The hashrate displayed on the pool is calculated from the amount of shares accepted so if the pool shows a similar hashrate between two people, it means they have submitted about the same amount of shares. Hence, they are submitting shares at about the same rate.
What comes to the uber profitable coin it could certainly be true if we only looked at a very small time frame but we are infact comparing several days. There is no uber coin in existence that could create a 10-30% difference in 3 to 5 minutes, not even if there were several of these situations as Bob still has a higher overall hashrate.