Bruce Wayne, a child of privilege who turned himself into a living weapon and will not kill.
John Clayton, never knew other humans existed until after puberty, grew up in a jungle surrounded by killers, and kills when he has too.
that proves my point imo…bruce is a fighting, killing machine as you put it…heres a brief list of his skills, nothing crazy just stuff he can do with his body, as you said, no gadgets: Genius-level intellect
Peak physical and mental conditioning
Master martial artist, acrobat, detective, escapologist, strategist, swordsman, tactician, and marksman, Master of stealth
Master of disguise
Highly proficient with technology
Excellent observational skills…
Compared to a guy raised by freakin animals, who has no traditional combat skills, an inferior IQ, and only kills because he has to; he's been forced to do what he does for survival, his skills are based around surviving in a jungle, not an outright battle/combat. He has never faced anyone near the caliber of a bruce wayne, with that level of intellect, and that level of skill/capabilities; hell never even another person…while an animal acts on impulse, bruce wayne acts on decisions, strategy, and knowledge of the human anatomy that comes from years and decades of practice and the type of access that only someone with privilege could attain. Bruce wayne has experience combating every type of human enemy possible, tarzan hasn't fought humans like that at all…if the contest was who could kill a tiger quicker, I might (still, only might) give the edge to tarzan..who can win in a hand-to-hand combat scenario? Its laughable that anyone think (not 2 sound insulting) that a jungle boy with no formal training would beat a man with the resume of bruce wayne.