* i'd say b'coz of equal knowledge from splinter, it's draw.
* both has advantages & shortcomings:
* if raphael can keep his cool, he has a big chance, provided his sais are really good weapons & can squarely block Leo's katanas.
* if Leo can think of some way to put his longer weapons to his advantage, he might outwit raph.
* but seeing how raph fight, he can switch on his nasty side & fight dirty, plus if he doesn't go berserk, i think raph will win.