I think Duke Nukem Forever still holds the cake... FFXV and KH3 both began as a concept in 2006, while Duke Nukem Forever took about 15 years if memory serves.
The Switch sales would definitely be lower by a bit in the beginning considering that, and if this rumor is true (big ass if), then quite a few people are going to wait for the Zelda bundle that will inevitably come out.
Emily Rogers also said that the Wii U would definitely NOT have a new Star Fox and Breath of the Wild would definitely have a female Link option. She honestly just makes random statements, and, if they lead to something, she and the rest of the Internet run with it.