the fx 4170 is out of place on their charts because they concentrated on starcraft 2 as being the only game that showed any differences. pretty much every game on their current test suite are designed around 2 cores. The FX 4170 is essientially a dual-core with CMT (amd's version of hyper-threading).
Throw in a game that can take advantage of every cpu core, the chart is flawed
Looking at minimum fps, the 41xx is the worst one there, and the phenom actually trumps sb slightly.