It depends really. Both Bruce and Dick are constantly fightning the more wackier villains, but with so many comic titles you do got abit of mobsters here and there, but really i like how Morrison explained that crime is art in Gotham and thus Batman is fightning the freaks more all the time.
Because you can't really compare Riddler, Mr. Freeze, Joker, Two-Face and so on with normals treet-level criminals, which the art demonstrated. I mean yeha Batman *does* fight street criminals too, thanks to having so many titles all over the comic stores, but i think JMS had a point. Especially when you consider what Batman has gone againts in Morrison's run, you can see there aint many "normal" criminals out there. Batman wiped those out, but the Black Glove increased the crime rate with ease.
Oh god, don't hurt yourself bending over backwards trying to justify this or anything.
He has no "point." Even if there
is very little "normal" crime in Gotham -- an very odd thing to claim that goes against what tons of books have shown -- and the majority is in fact "costumed" crime, then people like Batman and Robin would be helping
the exact same amount of people every night anyway whether they fought normal crime or costumed crime, unless the Joker specifically targets a different demographic of people than Joe Chill! It doesn't matter if there's, what, 75% psychos vs 25% normal thugs in a city, or vice versa, or
whatever, if Batman's team is out there doing whatever they can to stop
all of it, they're helping to prevent the exact same amount of people from going through what they went through! And if there "aint many 'normal' criminals" in their city to begin with, then...great? What's the point of harping on Batman for not preventing a problem which isn't that big to begin with? For Superman to throw Dick and Bruce's childhood trauma around like he's proving some kind of incredible "point"...no. Just no. From the man who brought us "Reed Richards: McCarthyist" indeed.
Not to mention, Superman's ******ed rhetoric ignores the very existence of police officers. Of course it's not as cut-down and dry as "police handles all normal crime, superheroes handle all superhuman crime" but if you're gonna try and analyze how a crimefighter's time could be best spent then, yes, a superhero's time would be best used on handling things that the police
isn't equipped to handle, freeing up the regular cop's time for stopping regular crime.