What is the deal here, don't quite understand the heatsink scene?

Read this: http://www.tomshardware.com/2008/02/20/cpu_cooler_charts_2008/ Reviews like this still need some pinch of salt I know, but I'm more confused to begin with; according to the numbers my $20 cooling rig on an Athlon X2 3800+ 2 GHz blow the living crap off them or did I missing some arithmetic... show more Read this:
http://www.tomshardware.com/2008/02/20/c...

Reviews like this still need some pinch of salt I know, but I'm more confused to begin with; according to the numbers my $20 cooling rig on an Athlon X2 3800+ 2 GHz blow the living crap off them or did I missing some arithmetic here?

Reused $18 Thermaltake R1 cooler using a $2 unknown brand thermal paste on a dual core CPU producing 29 celsius and 40 celsius in idle. I had no experience in reusing a cooler and end up spread too much thermal paste this time around. Basically I went for cheapest cooling component I could go.
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