This post has no "what if"s, just facts we know.
- Amon hides his identity when he does stuff.
- He wears dark clothing.
- He has access to all sorts of cool gadgets.
- We know the identity of one of his colleagues; a man who appears fairly aged and deals with all the major gadgets.
- We've seen him being very agile.
- He finishes the fight in close proximity to his foe.
This can only lead to one rational answer:
Amon is Bruce Wayne.