3DMark also doesn't accurately represent the REAL-LIFE (i.e. in games) performance of a card. As you linked, the 8700M SLI beats out the 7950 GTX in 3DMark. However, in real life, the tables are turned.
This has been covered and covered and covered, even before the launch of the M1730, Diefool proved it, as well as many others. 3DMark means squat.