I had not heard of http://speed.cloudflare.com either. I just tried it and I did not get accurate numbers. wifiman.com, from Ubiquiti/Unifi team does provide more accurate numbers. fast.com numbers are pretty accurate as well.

They serve so many sites that they are probably the best test there's now.

I'm a huge fan of https://speed.cloudflare.com/ and you'll have to come with better evidence. Also fast.com doesn't even give upload speed and latency.

> I did not get accurate numbers.

That's why speedtest.net is a great purchase for Accenture. Of course Cloudflare's speed test is accurate: it's a test of how fast your connection is to their network. No more, no less. That their network doesn't have the same PoPs means it'll have different numbers than Ookla's test, your ISPs advertised numbers, Netflix's test, and any other speed test. But for people that don't see the Internet as a pile of different interconnected networks, the conclusion that a particular test is inaccurate is a win for Accenture.