Starting Of The Company
Marvel suffered at the beginning for selling their comics becuase DC was overpowered competition with their Superman and Batman comics.
Later Marvel caught up with DC and beat DC in sales in the 1970's with their Avengers comics and Iron Man Comics.
Sales were really low and DC was overtaking Marvel Comic sales with their Superman comics.
Sales pitched up with their Captain America Movies and Avengers Comics.
DC vs Marvel
They had amazing sales with Spider-Man fanbase.
Marvel TV Shows
Marvel now has 3 TV shows airing successfully with their Daredevil, Agents Of S.H.I.E.L.D and Agent Carter. They have an amazing fanbase.
Competiting TV Shows are Arrow, Flash and League Of Tomorrow and this is heavy competition and because of these TV shows now DC is dominating the TV show business.
Language & Jargon
S.H.I.E.L.D - Fictional Espionage and Anti-Terrorism Enforcement Group.