As I just mentioned below [1], I'm just trying to give my feedback on the title and the fact that it (along with most superlatives) feels insincere to me when other great marketing points are available. It also doesn't tell me the things I'd like to hear, such as the feature set or some defining characteristic/feature, aside from "first to market."
I'd actually take the opinion that it's a high-risk low-reward claim to make. Either you're wrong, and your audience will know, or you're right. If you're the first, though, most people in a given target audience probably would have noticed without it being mentioned. Heck, if you're not the first but they haven't heard of another, they might assume you were first and not even think to look into the claim (thus discovering alternative products).
If I'm way off base (or if not), feel free to disregard my comments. As always, though, I like learning why I'm wrong when I am.
Also, rereading my initial comment, I may have come across as more hostile than I meant to. "Huge prejudice" should probably read "skepticism".
[1] https://news.ycombinator.com/item?id=8428619