yep, 3+4 look a lot more purcellish, to make 1+2 look like from steve purcell you need more detail, add some weird posters to the walls, ads for technobabylon, godzilla in stockings, suncream for penguin, this stuff, same for the inside, if it were by steve purcell there would be more out of place stuff, more posters on the doors, at least one locker would be open and there would be stuff falling out from it like body parts, fake teeth and dead fishes, stuff you wouldn't expect on an airport.