Exactly my reaction. I love this tagline because it just echoes how you would describe the product to a friend: "Oh it's like X but with Y".
It's at the complete opposite of the general trend of obscure generic headlines, like "Make your life better" or "Be more productive" or "Gain time and money", or the worst "Sign up for free" (yes, I've seen that as the main headline).
It just makes sense to not waste your visitors' time because they won't stay long enough to decipher your marketing gibberish.