My take on Johns is somewhere in the middle. He does some good work on some books, most notably the silver-agish DC stuff (ie, Flash, Green Lantern Rebirth). But doesn't seem to have a feel for Marvel stuff (ie, Avengers) at all.

Still, on average, I'd rather read his stuff than other "hot creators" Rucka, Bendis, Winnick and/or Loeb.