Lord of Tempests

For some undiscernable reason, the GW FAQ for Space Wolves contain the following ruling on Njal Stormcaller's Lord of Tempests special rule.

Q. How do Njal Stormcaller’s Driving Gale and Living Hurricane effects work if the Space Wolves player is the player going second?
A. These two abilities have no real effect in games where the Space Wolves player is going second – the tempest is yet to rage.

A lot of people seem to interpret this as meaning that those two effects never have any effect if the Space Wolves player is going second. However, a simple reading of the Lord of Tempests rule should set this misconception to rest. Under Lord of Tempests we read that its effects last a game turn. In the BRB we read that "game turn" means two player turns. In this case, that means that the effect will last through Njal's turn and the opponent's subsequent turn.

The only possible rationalization I can think of for the FAQ article is that they are explaining that if Njal is going second, Lord of Tempests has no effect on the first player turn of the game. Any other reading flatly contradicts the codex itself.