We must admit that it’s interesting when they finally meet each other. They both strike as the same kind of character – bad ass loners that are just there to kill zombies, detached from the emotional baggage of worthless characters like Lori. Andrea has made a nice shift from ‘Lori’ into a ‘Daryl’ sort of character, but Daryl is still the king of bad ass on the show. Michonne on the other hand is the best zombie killer in the comics IMO.
So you have two of the best zombie ruthless killers, both having unique weapons – crossbow and katana, both a bit on the crazy side (eating squirrel guts and wearing a zombie ear necklace vs keeping zombies as pets), having never met before (since Daryl isn’t in the comics).
I have to go in favor of Daryl as the bigger bad ass, just given how far he has gone and all the things he has done in the show – the trip to Atlanta, pulling an arrow out of his side, getting shot in the head, etc. But Michonne has apparently gone this entire time by herself. They are so much alike, so it should be really good to see the dynamics between them.