I would also disagree with the vocals score, though I do think she can sing. I'm biased because I don't care for Beyonce and her blatant song-stealing ways, but I would probably give her a 7.5. Christina, Mariah, and Kelly Clarkson's vocals >>>> Beyonce. But again, I just don't care for the way B sings, and her whole package kind of turns me off.
People are actually criticizing Beyonce's vocals? Uhh, are you kidding me. I'd argue that a 10 is too low. Probably one of the best voices to ever hit the music scene, no matter what the genre. Not to mention she is probably the best performer of our generation.
EDIT: By the way, I give Beyonce huge props for making an album she wanted to make instead of spewing out a bunch of radio friendly songs.