Chris dominated and destroyed Andy twice, is normal.
People were wishing for a Weidman style fighter to challenge Anderson Silva for his entire UFC career
For the most part he had stylistic favourable conditions in the MW division during his run:
A) one dimensional BJJ guys with zero striking and barely any takedown threat: (green & small Maia, Leites, Lutter)
B) Brawlers: Cote, Leben, Irvin
C) Jack-of-all-trades, but not elite, solid fighters (but no danger): Marquardt, Okami
D) one dimensional wrestlers with limited striking and poor sub defense: Sonnen
E) Great/successful fighters, but coming off losses or other layoffs (Hendo off a loss at MW and loss at LHW, Vitor, after 18 months layoff, Forrest, off a loss)
Andy in many ways was fortunate not to have a Chris type fighter in the division for many years, that's why people were so intrigued by the style match up even though Chris had only 9 fights to his name.
That the truth. Nonetheless Andy IS the MW GOAT (assuming you don't discount him for PED use) and provided us an awesome highlight reel. Without smashing the kool aid that Zuffa forced down everyone's throat, he's a great, but not THE BEST EVAR!1 etc.
Although I agree Anderson's prime ended a little earlier than Weidman, it wasn't the best Anderson ever, I still reckon Weidman would be favoured to beat any version of Anderson, even at his 'prime' which would probably have been between Forrest and Sonnen 2 IMO