This benchmark seems to often have problems with SLI and CrossFire setups. For the VisionTek HD3870X2, it's 1920x1200 resolution runs did not run very well -- there was a great deal of image corruption and those results should be discarded.
Judging from the other four results however, the VisionTek card put the second best performance in this game -- but its performance in the same league as the cheaper Asus EN8800 GTS 512.