From
https://www.litecoinpool.org/helpWhat is the share difficulty?
The share difficulty is a number that gives an indication of how difficult it is to find a share. The lower this number, the more shares a miner will find at a given speed, and the lower their value. For this reason, the share difficulty does not affect miners' expected earnings.
How does share difficulty influence my earnings?
Short answer: it doesn't.
Long answer: a higher/lower share difficulty does not mean you will be earning more/less, because your expected earnings are independent of the share difficulty: they only depend on your hash rate and on the network difficulty. A higher share difficulty can only increase the variance, but not in a significant way.
I've been meaning to stir this pot... since everyone has their popcorn, let me rile the noobtives...
People complain that other with the same hash rate make more than them. How is that possible? Everyone chimes in with various answers.
People complain about the high difficulty and how they can't even mine because it's "too high for my lowly system". The answer is that the high diff doesn't matter.*
Now the fun part. *hands wringing*
Because this is a multi-coin pool, different coins during a given day are going to be worth more or less than other coins during that same day. On days where we rarely switch coins, none of the above really matters... On days with frequent coin switches, the people with big hash rates will likely submit shares on all coins, and none of the above really matters either to them.
If you don't have big hashrate, and we make frequent coin switches, or even just switch to a really fast coin whose difficulty adjusts rapidly, you're gonna have a bad time if you think you're going to get the best payout ever. I hate to throw out logic in this thread, but if you don't submit shares during some of the fast rounds it just isn't going to add up the same way as the folks who do get shares in. Identical hashrates submitting shares during the identical 24 hour period may not wind up with the same payout because when you submit those dozen diff 1024 shares is a variable that can't be accounted for in Average hash or average coin price or any other metric. Except payout.
Of course, if H20 counts all shares for all coins equally, the above is going to be silly and I'm wrong, but at least I'm poking the bear, and maybe some folks will actually stop to think for themselves before whining. Those who know, this doesn't apply to you - enjoy the show. But if you think it doesn't apply to you, it really applies *specifically* to you.