Did Marvel and DC/Wildstorm both use the same system for numbering their comic pages?
No, they didn’t! The two companies approached page numbering in two different ways – Marvel would officially number each page of artwork by the number of the actual page that it was due to be printed on, inclusive of the adverts that would appear in each comic. This can lead to some confusion, as when their ThunderCats comics were actually printed Marvel only used to number the story pages. So, for example, a page that was printed by Marvel as story page 14 could actually be officially numbered by the production team working on the comic as page 19, if by the point in the comic where that page appeared they had printed five pages of adverts.