Chicken - 9, looks good, but be mindful of even saucing.
Ribs - 7, just generally uneven - including in length and width. I think the placement within the box was poor as you can really only see the inner meat from one rib. Also, different amounts of bone are showing from each rib. I know managing the pullback is sometimes out of your control, and I would haven't deducted points for this, but in the same way that you don't score for garnish, this is noticeable.
Pork - 9, a little difficult to see in this picture, but I think it looks good.
Brisket - 7. I agree with previous comments on crumbs on meat and ends being difficult to see because they are behind the pieces. I think the overall shape of each piece is also not great - they are almost tear shaped.