Unless your arguing the numbers don't matter (in which case, D&D is no better than Cops & Robbers; "Bang! You're dead." "No I'm not." "Yes you are...") then a fighters mechanical limitations DO come into play.
D&D is most certainly better than C&R! It has a DM whom the players have agreed to be the final arbiter. Thereby solving the only flaw in C&R. While I have to admit to enjoying having additional rules, the farther we get from C&R+DM, the more we lose what is unique about D&D/RPGs and fall closer to all the other mundane games. IMHO. YMMV.