IMO, it may make better sense to substantiate how these "benefits" with relate to your client target.
But I'd echo bumfluff's point about the terminology you're using - reminds me of a lead I lost with SEO services in my early days, after I kept talking about rankings. The director turned round, told me that was all really interesting, but at the end of the day, all he wanted to know is how much he'd make from it, and what it would cost to do it. I don't see that sort of cost/benefit idea projecting from the ad.
Just my 2c, though.
Also, bet 2c you've forgotten to set up tracking for ad response?