You have found shares that are good enough to qualify you for Namecoin, but not Bitcoin. (note that this doesn't decrease your Bitcoin productivity, since both are solving the same problem with the same parameters, just with the Bitcoin shares being better solutions).
It's not that this miner in particular found the blocks, but rather contributed to the pool's finding of the NMC blocks, and he was awarded some NMC accordingly based upon whatever payment method the pool uses.I never said the miner found blocks. The miner is finding shares, and has successfully found NMC shares. Of course, a good enough share is used as a block that the pool broadcasts.
The shares the miner submits are not "good enough for NMC but not good enough for BTC". It is in fact that the shares he submitted were counted for both NMC and BTC. He earned NMC because the shares he submitted were paid out when blocks of NMC were found. No blocks of BTC were found so he didn't earn any. When the pool finds a block of BTC, assuming he's got any shares, he'll be paid.
