Actually, it would seem Foxi4 doesn't know how averages work, it's 10, 10 and 9 scores, so that's 9.66 average, not 10 Other reviews do x.x for the average, kinda unfair to buff it up like that...
Final score SHOULD be an average of sorts. Final score is basically the aggregate of all subscores or their average depending on what way you are rating it.
The review section always had a note next to the Overall score clearly stating (not an average), and there are reasons for it not to be an average. An average would just repeat information, while the overall score reports on the synergy of the components working together, it may be positive or negative synergy, but how it all mixes is reported in that score. I prefer it this way, it reports more useful information.