The definition of globular is globe-shaped, the definition of globe is spherical.
That said, many of the listed "instant DQs" are not. Incorrect weight is a DQ only if SIGNIFICANTLY (20%) different than the standard. Incorrect eye colour is not a DQ, it is a defect. Non-standard colouring is not a DQ; how a judge will handle a bird that is wheaten and is listed as buff, or salmon and listed as partridge or similar varies from judge to judge and show to show. I have seen judges correct the coop tag and judge the bird as what it IS, and I have also seen them judge the bird as what the tag is marked as. With the former, birds tend to fare far better than with the later, which will often lead to a DQ. I rarely see birds' variety actually listed as "AOV" except with American Serama; most people simply list that variety that they believe the bird to be.
Now there are certain colour issues of recognized varieties that ARE a DQ (red, gold or silver leakage in a self-coloured bird (blue, black, self-blue, solid white feathers in a buff bird, red leakage on a grey, etc.)
If you really want to know what silkies should look like, purchase the standard.