I'm familiar with why they sell it as 940mbps vs gigabit; that doesn't concern me. I also don't buy the explanations of MTU, accurate timing, etc for one big reason: other sites like Speedtest.net and the Cloudflare speed test we're on the discussion thread for simply do not have this problem.

And of course, I'd not expect them to want me to pull down 1gbps of streaming video. But I would expect them to burst my connection when downloading videos for offline viewing, their own bandwidth permitting. Unused bandwidth at a point in time is wasted bandwidth. But more central to my original point, I'd also expect their browser-based speed test to not claim I'm going faster than is physically possible. Let's be honest - however they're measuring the actual connection speeds is not as accurate as some of the alternatives on the same playing field.