Capability is not enough to create reasonable doubt. However, I think you probably agree since you add a pretty big IF to the end of that statement. I've watched countless documentaries and web videos about how the moon landing was faked and I've never seen evidence that would make me have a reasonable doubt.
BTW - The best coverage of this whole topic so far was by Penn & Teller: Bull$h!7 on Showtime. The engineer from NASA they got was hilarious. They also show you who is behind the rise of the conspiracy... which is not a good thing for the conspiracy.