Speed, strength and sword are all Tommy's advantages. Skill is a wash, as is experience. I know Ra's has way more experience, but in my opinion, it only counts for so much. I mean, there are only so many ways you can slash with a sword, and parry and block....
Wow, Gorgon how is this not a spite thread. Anyway even in a hypothetical scenario where R'as Al Ghul genetically modifies himself is one of his only feasible ways (barring PIS and CIS) hopes for victory and even then it would have to be with something quite monstrous...then you have to get past the petrification gaze.