I'd hardly call this Alfred a "hulking bruiser". He was buff looking yes but nothing like that description. This is keeping in the tradition of attempting new takes on old characters, and taking from different source materials in order to do that as Christopher
Also Alfred has been shown as being more than just the butler before. We've already explained numerous times in this thread his background and character history. He isn't JUST the butler. He is much more than that. Especially to Bruce.