That doesn't make any sense. The whole point of a 512 diff rate is you send data to the server 1/512th of the time vs 1 diff. If they never get sent, how are they going to be accepted.
Um... I'm pretty sure that
that - what you just said there - is what actually doesn't make any sense.
By the way, it's not ad hominem to point out when someone is wrong. And based on what you just said, I think you just lost what little credibility you had. I think you should go read up on how mining actually works before arguing any more.
What doesn't make sense? If something is 512 times harder to solve, a solution will be found/sent 1/512th of the time. If a block is found before the share, the work is never sent.
If you never send your proof-of-work its not counted.
What exactly doesn't make sense.