Umm, no. He specifically said "We will build one of them", and he specifically said "the reason for that is because the world doesn’t have enough engineering talent for anybody to build three of them at one time. It takes the entire livelihood of a computer graphics company to build one of them". There is no reason to be obtuse when interpreting this statement. It is very obvious based on his statement that NVIDIA will build one next gen console, and it is very obvious that he thinks one computer graphics company would be spread too thin in trying to concurrently build three all new next gen consoles.
What he thinks isn't necessarily fact. The comment obviously doesn't affirm that any contract existed. So basically you've got an Nvidia execs gut feeling before the fact.