Apparently, everyone loves that Civil War, as Comic Book Resources finds out when it hosts a roundtable discussion about 2006:
Josh Pool, Tokyopop : Marvel’s “Civil War.” I think that it was the most successfully run and branded crossover event within any major universe. Vince Hernandez, Aspen : Marvel’s “Civil War” definitely fits the bill. It brought loyal, and more importantly, new readers into comic books stores to buy this book and its respective spin-off titles. Bringing in new readers to comic shops is always a good thing.
Tom Brevoort, Marvel : “Civil War” galvanized the readers who were already in the marketplace, and drew in new and lapsed readers due to the mainstream promotion the series received. Love it or hate it, everybody was paying attention to it.
David Gabriel, Marvel : Besides just restating the obvious, I’d have to say the unmasking of Spider-Man within the pages of “Civil War” had the biggest impact on the entire industry. When you boil it down, the excitement and mainstream press that came about from that one incident as more than anything we have seen in a very long time and it spoke volumes in terms of sales for retailers and for Marvel.