This confirms my suspicion which I mentioned in a previous comment in another thread:
> I think Netflix has a weird way of measuring bandwidth, unlike say the way Speedtest.net would do it. I've noticed this before when they compared Google Fiber to something like Comcast, and Google Fiber won [1], but was only slightly better, so I was thinking "that can't be right - Google's fiber is 50x faster. So why isn't that being shown here?" I think Netflix just shows what's the "maximum" speed needed to deliver their service. It doesn't actually measure the speed of that ISP's connection. So all they care about in their test is whether the ISP meets that ~3 Mbps they need for a perfect Netflix streaming.
[1] - http://www3.pcmag.com/media/images/381404-netflix-april-isp-...
From the Netflix test perspective, as long as your ISP can hit 3 Mbps, that's a great ISP. I think we all know that not to be the case. If an ISP gets 1,000 Mbps, Netflix doesn't take that into consideration in this "ISP speed index".