Might sound a bit stupid but wasn't aware that merge mining works like this. I thought that hashrate would be divided through all the mined coins. Then I like merge mining much more.
Its what people initially think when they join merge mining. The solutions that the miner comes up with for the math is checked against the alts. There is no loss or division of hashing power, just extra bonus. If you want to check into it more, your looking at auxpow merge mining (which is the algorithm/mechanics behind the merge mining at mergemining.com, and for most sha256d or scrypt merge mineable coins) ... To be honest, if it was split between different coins, I think everybody would just stay on the highest paying coin and never merge mine.