I thought this too!
I was so different from the practice exams, especially because of the completely different mark distributions for the questions.
Also, I found it a bit odd that the language used in Section A was not named, as I would have loved to know what it was (something vaguely romance-y, like Romanian maybe?)
But I do agree that it would have showcased ability a bit better if the invented language had some more in-depth rules to follow, e.g. different genders.
Overall I thought it went really well too, I appreciated having less questions than on the practice exams as this meant I had an extra 15 minutes to check over everything instead of doing Section C.