Sheep, Someday, when you are ALL growed up, you hopefully will learn that making judgements about a subwoofer based on a graph is not the best idea.
Now ... and try to follow along here, I happen to have the PB12-Ultra and the UFW-12 here. We also own about 500 DVD's. For 490 of them, and 99 % of our music selections, the UFW-12 is the superior sounding subwoofer.
For 10 DVD's, and about 4 CD's, the Ultra is the superior performer due to its tactile abilitities with infrasonics.