They get an unfair advantage in that they get camera time and more columns written about them - but that's not what Shaun meant. Or was it
He's making out like it'd be easier with someone. From my memory, not everyone who went in as a couple found it easier. Some wished they were doing it alone and being in a couple/pairing may have actually held them back.
I do think it's more about air time that he don't like it...