Why is Megamultipool now offering to mine ASICcoin (ASC) instead of Bitcoin?

[acaciosc]

http://www.coinwarz.com/cryptocurrency/?sha256hr=80&sha256p=0&sha256pc=0.1000&scrypthr=1000.00&scryptp=500.00&scryptpc=0.1000&scryptnhr=450.00&scryptnp=500.00&scryptnpc=0.1000&x11hr=3000.00&x11p=500.00&x11pc=0.1000&keccakhr=500.00&keccakp=500.00&keccakpc=0.1000&quarkhr=5000.00&quarkp=500.00&quarkpc=0.1000&groestlhr=10.00&groestlp=500.00&groestlpc=0.1000&sha256c=true&scryptc=false&scryptnc=false&x11c=false&keccakc=false&quarkc=false&groestlc=false&e=Coinbase

In this example, the profit shown in BTC is $2.03, while in ASC is $0.66. Why is not BTC mined then?
I'm newbie, so take easy on me  

[acaciosc]

*BUMP!*