Board Thread:Warhammer 40k General Discussion/@comment-26165786-20150304163255/@comment-18016240-20150423193806

In terms of personal combat ability Sanguinius could likely wreck every primarch aside from maybe Angron. I think even Horus remarked that his fight with Sanguinius would've gone very badly for him if he wasn't being buffed by the Chaos gods and Sanguinius wasn't already exhausted from helping to defend Terra (including the time he ripped Ka'Banda's wings off and hurled his broken body out back to his buddies.)