Unfortunately, that Jay Leno was the 2004 model. The souped-up 2009 Leno has apparently decided he wasn’t ready to turn over the keys to NBC’s storied late night franchise.
Want proof? Check out video of Leno’s announcement five years ago that he was all good with NBC’s "Tonight" transition plan, saved by a poster on Funny or Die. (H/T to TVBarn.com, which spotted the FOD clip).