Is that a joke? Routh isnt a terrible actor, but Dylan Dog was a terrible terrible movie. Im gonna assume you're being ironical.
Anyhoo, I honestly dont know who Id like as Drax. Its wide open imo, and Im okay with a talented actor coming in and creating the character more or less from the ground up.
But casting beefcake is just a non-starter. Unless youre a girl/woman or gay, I dont really get it. Drax doesnt have to be model handsome. He's not Thor.
Now if you are female or gay, then I understand completely why Routh or the werewolf from TB work for you. I kinda have a thing for Rosario Dawson, and thats probably party why she's my pick for Gamora. But she also has a resume that makes her a good choice, and a very distinctive look. Werewolf boy looks like a male model, like the guy on a million romance novel book covers, and hasnt proven much as an actor beyond his obvious comfort zone.
And they will probably have a brief origin for Drax, so the actor has to pull off Art Douglas, saxophonist, as well. Its important that the audience sees his humanity as well, and not some statuesque adonis.