Given that Netflix say that a constant connection of 4,800kbps is necessary to achieve 1080p, you can read in this link what they themselves said was achieved in March in the US... and This Link to see what is available in other countries

Given that the US seems to average <3Mbps and all the other countries only marginally above that, it does make their 1080p claim appear spurious (at best) for most users.

As for how they think most users will be able to avail of the 15Mbps they say is necessary to enjoy their new 4k material, I have no idea.

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