Inspired by Mickey71's bump thread. Are any of these bump worthy?

I have not been able to figure out what PSA looks for when they assign .5pt grades on cards at the lower end of the grading scale, grades 1-4. I have seen some that look like no brainer .5pt grades and I have seen some .5pt grades that leave me scratching my head. It makes me wonder if any of these would pull a .5pt bump. Do you think any of these are worthy?
T206 Cy Young Portrait - No creases or wrinkles, perfect focus and great color saturation. Cons: Just a little too much corner wear for a 5. Centering is good but not 50/50.

M116 Christy Mathewson - Pros: Near mint corners, no creases or wrinkles, very nice color and focus. Cons: Slight tilt, small indentation on right border but is barely noticable. SGC says reason for the 4 is due to a very small amount of scrapbook residue on the back that is barely visible. Highest grade a card can get with this from SGC is a 4.

M116 Ty Cobb - Pros: Ex+ corners, perfect centering, nice color and focus. Cons: Small area of chipping on the bottom border and a very light crease/wrinkle that can only be seen when you tilt the card against a light source.

T205 Cobb - Cons: Upper left hand corner and small print spot on Ty's lip. Pro's: No creases or wrinkles, perfect centering, no chipping at all along the edges just at the corners, color and focus right on.
T206 Cy Young Portrait - No creases or wrinkles, perfect focus and great color saturation. Cons: Just a little too much corner wear for a 5. Centering is good but not 50/50.

M116 Christy Mathewson - Pros: Near mint corners, no creases or wrinkles, very nice color and focus. Cons: Slight tilt, small indentation on right border but is barely noticable. SGC says reason for the 4 is due to a very small amount of scrapbook residue on the back that is barely visible. Highest grade a card can get with this from SGC is a 4.

M116 Ty Cobb - Pros: Ex+ corners, perfect centering, nice color and focus. Cons: Small area of chipping on the bottom border and a very light crease/wrinkle that can only be seen when you tilt the card against a light source.

T205 Cobb - Cons: Upper left hand corner and small print spot on Ty's lip. Pro's: No creases or wrinkles, perfect centering, no chipping at all along the edges just at the corners, color and focus right on.

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Comments
Neither has PSA.