There's some misconceptions on here, faster flow means less time to absorb heat well done, havbe a banana, quite correct.
It also means MORE COOLED water passes in the same given time.
Frankly why anyone thinks that no test is valid unless it is done in a laboratory is beyond me, a lab can't replicate the conditions that a rad would see on a car going along the road, so this is most likely as near as you can get.
Personally I don't think there is a lot in it at all, just don't like being ripped off by people trading on good names they had years ago, I don't give a toss what it looks like so long as it does the job.
Unless of course it is more important to LOOK good, even if sat at the side of the road with a blown head gasket as you got the BLING over performance one ?
tabetha