There's nothing different as such, all it does is that it lets you check those basic stats easily. With just one click. In all other sites, you probably have to click twice or enter captcha. However, here it is not the case. Also, we are thinking of having more features after some time, like comparing two sites, and checking these stats for multiple sites at once, with just one click.
PS. There's nothing new in this tool, we wanted an easier tools for ourselves, so we created one and now we'd appreciate if more people use it, and suggest improvements.