I can see what knightwing is saying, but there are some key differences, chief amongst them being that Frank Miller is unaware of his own craziness and is a much, much worse writer.
I can't recommend this book for everyone as it seems like a bit of a marmite one, but I enjoyed it and, as usual with a League book, it took me ages to get through it as I was spending so much time puzzling over all the cameos. It's heavily skewed towards British stuff since it's set in London, but the more you know about them, the more you'll enjoy it. one of my favourite bits was seeing Graham Linehan getting thrown out of Gosh Comics by Bernard Black.