As the company staff list, boxed in the variant and line-wide last-page feature, lists Todd S. Tuttle as a letterer and colorist, his signature on the cover art may well be intended to indicate that he worked in one or both of those two capacities.
The feature's title "The Big 10" is presented normally, but a red "X" is drawn through "10" and a red "11" is scrawled in, similar to the rendition of "with Ralph Snart."