Imagine how difficult it would be to find someone of your specifications. There are approximately 200,000 actors in Hollywood, with this number, the chances of finding even remotely similar actors are low. So be glad that they didn’t have to do entirely different characters
I have seen a lot of actors that are close enough to be passable for certain video game characters, and some of the characters even seem like they were designed to look like some people, but they almost always end up finding people who look nothing like them (probably for cost reasons, but even so, they could have found closer-looking actors).
Some actors and characters that look similar:
Nathan Fillion and Nathan Drake
Karl Urban and Commander Shepard
Ron Perlman and Admiral Hood
Keith David, Carl Weathers and Sergeant Johnson
Gerard Butler and Geralt of Rivia
Vin Diesel and Shadow Man
The point is not for them to have the same face as the game characters. The points is for them to act like them or whatever artistical interpretation they chose to have, as to represent what they mean to represent. We didn't see their auditions, so we won't discover how well they play the part or contribute to the part until it comes out.
This same dumb argument surfaced with the last Resident Evil film, and I'll say what I said then... if you want "cosplay" go to comicon, if you want a good adaptation you have to trust that the show runners have cast the best people for the job... and that wouldn't be cosplayers or mocap actors.
In the case of the RE film, yeah it wasn't great (although arguably better than the Paul Anderson series of films), but that wasn't due to the casting.
I'll reserve judgement on this particular adaptation until I've seen at least the first episode.
The point of having actors similar to the characters is to make it so that fans of the games can more easily identify characters, so that the characters look right, and so that the roles are proper.
Just imagine if Peter Parker was played by Dwayne Johnson, if Clark Kent was played by Dave Bautista, or if Blade was played by Adam Sandler.
...They could probably do okay, but it would be really weird to see them acting as those characters.
My point though is that characters are often more than just their personalities, and when you look at an actor, they usually have certain qualities that do not always mesh with an established role.
