I'm getting between 80 and 90 with these tests. But my accuracy is atrocious (~90%).
Back before I got a job, I actually had my typing speed certified. They had some interesting rules. The primary rule being, anything less than 99% accuracy is not a valid speed. I'm no longer certain, but I seem to recall that backspacing wasn't allowed either. Finally, words were a set number of characters, not actual words. That way 'of' 'a' and other short words don't count a single word each. At the time, my certified speed was 69 wpm.
There is quite a bit of logic to this. The more errors you make, the more time you will need to spend re-writing the same section of text, whether it's immediately with the aid of backspace, or later on as an actual editing process.
I rarely type long paragraphs, and I definitely don't type from written text anymore. As a result my speed and my accuracy have both dropped over the last 6 years. I strongly doubt that the speeds being recorded by these tests follow the same rules.
Ultimately, if I'm composing something, such as an email, I only need to type as quickly as I can think, which is about my average speed anyway. I'd like to type faster, but it serves little benefit. I've recently discovered that slowing down and thinking my sentences through, enforced by handwriting speed, actually results in better language. If I type straight from my thoughts, I end up with a less flowing, less well written text.