You don't. If you have AMD GPUs you can't compete unless you buy a private kernel from Wolf0 for a couple thousand.
The reason the numbers look so sickly is he's already sold his private kernel to big miners and there is no way you can compete with a public kernel. Get out of GPU mining while you can. It's ASICs all over again only with private kernels and one person raking in all the money. Unfortunately nothing is ASIC-Wolf0 resistant either as he'll develop anything for OCL unless the public implementation is sound (we're talking scrypt levels) and there is no room for improvement.
This miner:
https://bitcointalk.org/index.php?topic=616786.700 uses a older leaked version of his kernel, which is still much faster then normal public kernel. That's your best bet and improves hashrate over the typically available SGMiner by 50%. It has a 2% fee, but that's the price you pay. If you scrounge around a bit you can find where his kernel was leaked and use that. His newer ones are still about 10% faster then that, but that's much better then nothing.
I'd highly encourage anyone who's mining using x11 to get it, it improves your odds and also fucks him over as a added benefit. I don't think anyone realizes how detrimental he's been to the community the past few months until this starts getting more light.
that Kernel is madnes... R9 290 hashing on 6700mh/s each.
Thanks for providing.
Is that miner somehow compatible with nicehash?
Ok, already found the reddit thread and did it as Wolf0 stated. Is it true that it donates automatically 2%? If yes, then it's ok if I wont donate anything myself?
Thanks for that awesome help