>>150306947
There's tons of genuine shit manga. Not to mention that most manga-ka have a team of 3-6 people pulling the finished product together.
Toriyama basically only drew the characters and plotted the dialogue. EVERYTHING ELSE was done by assistants. Backgrounds, shading, inking, action-lines, placement of dialogue bubbles and sound-effects were all other people.
Meanwhile, most of the best b&w stuff in the West (and the East, honestly) is done by no more than two guys. The real secret sauce is letting someone who genuinely knows what their doing have the time and creative control to do it. That's why the best b&w stuff from Japan is from artists from monthly/bi-monthly magazines and the best b&w stuff from America is from indies who didn't have big studios micromanaging every little thing they did.