[quote=DeathstrokeSW]The thing is, this Owlman is a hero albeit one who kills.[/QUOTE]
That makes him an antihero.
[QUOTE]He's lost at first but that's later. Right now it's Owlman Begins.[/QUOTE] 
Don't focus on the metamorphosis so much as the causes for him changing his costume and moniker.
[QUOTE]EDIT: Please; Batroc got beaten up by DP in a single panel.[/quote]
 Obviously I missed something.