That being said... Listing the headers in all caps (without so much as clarifying in the accompanying post) was a mean thing to do...
Then again "Megaoctet" doesn't quite flow, but there would be no confusion between a bit and an octet however you abbreviate it. We're still left with is deciding whether to multiply by 1000 or 1024 for each magnitude though.
I'm not sure about your numbers, as I'm finding a bunch of conflicting information online. From what I've seen, an HDTV quality stream would be around 2 MBps, but I've also seen numbers closer to what you're reporting.
It's conceivable to me that Netflix could do a quick speedtest that would exceed the video bitrate when testing your connection for HD-ness.
In any case, I might be wrong. Netflix should really clarify this. There are people arguing about the same thing in the comments to that article.
EDIT: and as tedchs points out, the other provider numbers definitely reinforce the interpretation of it being Mbps: I don't think I've ever seen AT&T advertise a non-Uverse DSL speed of above 6Mbps, which wouldn't let it hit 1.5MBps.