It's not just the looks that are the same. The UX / mechanics are way too similar too, e.g. how you can apply filters (by URL, by referrer, by browser, etc.) to narrow down the stats view.
I would say pretty much the idea is as follow: "Let's do it so User would know how to use it before we are big", and once you're big enough - you can set the trend. But at the beginning it's just not worth it and highly risky