How do you figure? I'm just pointing out that "tabletop revenue" is not one and the same as "D&D revenue". And once again, the original article said that most of the growth in "tabletop revenue" was from MTG, meaning revenue from MTG tabletop products. By definition, that means the share of tabletop revenue from D&D tabletop products was something less than MTG's share.
D&D's overall performance is not just in "tabletop" D&D revenue, but also in other categories such as video games - hence Dark Alliance dragging the D&D category down overall.
Likewise, MTG being up 11% presumably applies to all MTG revenue from all streams, not just tabletop.