I don't really think whether you did or did not use c4d's strengthens or hurts this at all. It seems pretty irrelavent from the final outcome.

I gotta say this isn't your usual calibre of work. THe red/orangy smoking stuff on the far right doesnt need to be there. You lowered the opacity on it which makes me think youw ere either trying to cover something up yet make it look natural or you just got lazy on blending it.

THe chain coming down is okay, but the smudging really doesn't work with the chain. It's like oh theres a mateal chain, oh now it's smeared across the sig lol. It just doesn't look right.
THe blending isn't bad, i rather like the way you worked him in with other copies of the render.

I think you should get riud of those "ghosting" like artifacts. It's little things in the sig that are like 60% opaqcity. The just make it look busier and i really don't thinkt hey help the focal at all.

The text is okay but i don't like the white in this instance.
Not bad though.