No. The verbiage on that site is a bit misleading.
PCIe 2.0 doesn't mean the card has an 8-pin PCIe.
8-pin PCIe doesn't mean it's PCIe 2.0
It's a different specification for PCIe cards that dictates 6-pin PCIe connector vs. 8-pin.
Cards with 6-pin and 8-pin PCIe connectors are called "300W cards", independent of the slot type (1.0 vs. 1.1 vs. 2.0, etc.)