XrayMan
Should have just made it easier and they should just labeled the following for us nerds:
Bi-SLI= 2 cards
Tri-SLI= 3 cards
Quad SLI= 4 cards. 
It's pretty simple.
There is 2/3/4-way SLI. Quad SLI is 2 dual GPU cards, such as the GTX 690, in SLI. It's been the established terminology for years. That someone has suddenly decided that SLI only means 2 cards seems kinda pedantic. Nobody uses it that way.