I got 7, and one of those was just a typo on my part. And I never play Brain Twist, am not too good at them.
It would certainly be a better quiz with some follow-up in the info as to what the reasoning might have been behind the translations, but we have plenty of old sub-standard quizzes online, this is just another. It's playable, and some people might even like it.
I'd say give it a "poor" rating, if you want, and that's enough.