That was a great fight and Vanatta is clearly a great fighter, so that's a great win.
Too many MMA fans put too much stock into rankings and records. I've seen guys give Fedor credit for beating a "top 5 HW" in Gary Goodridge, while Ferguson seems to have lost stock in the eyes of many fans for beating an actually good fighter who wasn't ranked. I mean, I know Fedor is way more popular than Ferguson, but it shows a big problem where fans are just going by rankings instead of just looking at how good the fighter actually was.
That was a performance worthy of a title shot, for sure.