That's just the way I interpreted what Emma said, you can of course interpret it in anyway you like, maybe manipulation was a little harsh. Influence what viewers watch by "suggestibility" using Showcase is probably a better way off putting it.
It's on Showcase so it must be worth watching.
Obviously the more room they have for Showcase programmes then the greater number of "wildcard or left-field pick" programmes they can put on it. She is clearly stating that Showcase can influences and "drive viewing figures", by successfully getting more customers to watch previously mentioned wildcard and left-field pick programmes that they wouldn't of normally.