I can't say I agree with Brovo's method, but I will say that the way I read it, is to find a point to critique that wouldn't automatically be a reason to outright reject them. I understand the motive, because let's be honest, you can't read into a person's character just by reading their character. That's bullshit, there are limits to what you can tell about a person based off a character sheet. Me, I roll with giving everyone a shot, but this means I also deal with a good amount of players that drop within a few days because of it. I've recently had to deal with a person I could've plucked out by using Brovo's method. That'd been a lot easier (although subsequently also not as much fun due to the death scene we wrote for said dude's character.) 

The main reason I don't do like Brovo is because people can grow into RP's. I've seen a number of players who started out needing help and maybe even had some meagre sheets, grow into valuable contributors. I've interacted plenty with people who wouldn't deal well with critique well initially, but when given time managed to be co-operative regardless. Now I'm not saying to drop all your standard for sheets, but just like you give people a chance to change their sheets when something's wrong, you should also give them a chance to change when their initial reaction is wrong. Usually it's a lot of extra effort for nothing, but the chance of the opposite being true is a victory for the RP as well as any other RP said user will join in the future.