fedora 15 & 14 with a hvr2200 can display two windows of tv hd with vlc
ubuntu 11 did one tv and was not able to open a second . after that first time vlc was not able to display even 1 tv .
from the original install of both os , i copied the file NXP7164-2010-03-10.1.fw in the lib folder and created an options file in the etc/modprobe.d folder with options saa7164 card=4 in it .
long ago , ubuntu 9 was perfect with an hvr1100 out of the box with tvtime
The conclusion is [REDACTED]. (just kidding)
If you read carefully, the conclusion is on the last page...at the very top, even.
One severe short coming of this test is that it used only CPUs from intel. There are architectural differences between intel and AMD cpus that could effect performance and power consumption differently.
It doesn't matter if Ubuntu 11.04 is faster, Fedora 15 is just better and the Shell goes a long way to do prove that.