66% of the miners are mining with the 30% slower miner. (alexis 1.0 legacy code)
live from one of the pools:
The total nethash of renesis today is around 50GHASH. This is around half the hashrate of the Bitcore network...
(The renesis gpu miner is only abit slower than the bitcore miner, so they can be compared.)
The miner's speed is one aspect of the equation, the other aspectsi are the initial cost and the gains.
With 2 cards and 3$/day profit, I'd generate 3.82$ based on your optimistic estimation after the 2% fee. Therefore I'd need 488 days only to brake even.
Someone with 10 cards, however, would have a ROI of 49 days with your miner. But since this is a coin with no value at the moment, there's no point in calculating or buying a private miner since we won't know where will the price land.
Since you're not expensive though, I'm sure you'll find some risky miners who will invest in this coin at this point.