The affect is a combination of the way that he lights and retouches his images.
It's the whole process. Even How he sees and creates....ie.His creative palette.
You would be able to in general create his look with photoshop and basic lighting,
such as soft boxes reflectors with grids diffusion all that stuff.
You would however need to be able to use the gear in the same way that he does.
As far as what he does with photoshop I think it's pretty basic stuff as well But he's obviously developed his own way of using those tools and Filters.
Definitely Photoshop and if not, that look is definitely achievable in Photoshop.
When I say basic I don't mean at all to simplify what he's doing to achieve his look.
Just in regards to the tools he uses.
If you include some of your attempts at his work with your post it could help others to help you to identify what your not doing.
But I think your probably over thinking the retouching and underthinking the lighting.
but that's just my take.....Hard to say with out seeing your attempts.
In photoshop I just added a backround layer smart blured it lowered the opacity a little on that layer
and erased back the details that I wanted to look more real and sharp. try that.
It's kind of bludgeoning the process but it show's you that put a little more time into it
and you'll get it..I used images that were lit similarly to his for the test.
Good Luck!
Photoworkshop