While that thread does need to be made.......in terms of push/pull on 27-30mm thick rads, it applies to all rads. Take a look at Xtreme Rigs testing (http://www.xtremerigs.net/2015/02/11/radiator-round-2015/5/). You look at the slim rads and they see less than 10% increase of total dissipation capability by adding another set of fans. So....that nets you, what, maybe a degree in liquid temp? Which in turn becomes a quarter of a degree in component temp? So, you are out ~$40+, have to listen to two more fans, and have dropped your temp by less than one degree.
Now, in the case of a CLC, where you need the obnoxious fan speeds for it to do anything, that is a substantial amount of noise we are talking about.
Unless you are one of the lucky posters here whose world is not defined by physics as we know it. In that case, you added two fans, this made your CLC completely silent, and temps dropped by 30 degrees "while gaming". Your My Little Pony also came to life and brought you a chocolate milk while you were benchmarking.