Even though science fiction has a broad appeal these days it still doesn't make for big TV ratings. Yes, sci-fi movies can equal big box office, but TV is a different animal (especially in the U.S.) That's why Sci-Fi/SyFy broadcasts wrestling. They need to boost the ratings.
No, Sci-Fi broadcasts wrestling because NBC Universal signed a contract with WWE to take a number of hours of programming per week and a number of Saturday Night's Main Event specials. They were an hour under on the weekly programming and, with USA reluctant to be known as the "wrestling network" (since they carry the other three hours), NBC decided that ECW should air on Sci-Fi instead.
It is nonsensical to blame ECW for whatever problems Sci-Fi has. It has one hour a week.
Wasn't blaming anything on anything. But if Sci-Fi had great ratings they wouldn't put on wrestling, they would put it up on USA. I stand by science fiction not being a big ratings draw on TV in the U.S.