Well, he took a lot of time (1 min +) on every pre race favourite but Evans and Nibali on PdBF. So while "crushing" might be a bit too much in Wiggin's case, he certainly made a statement on that climb too. Additionally, two days later he won the TT and after 9 stages the Tour was basically over with Evans at +1:53, Nibali at +2:30 and every other competitior at more than 3 min. So the point stands - take time early is key to the Sky/US Postal approach that JV wanted to copy.Wiggins never crushed anyone in a MTF.
He was actually outsprinted by his teammate on the very first MTF in 2012 (PdBF).
But Wiggins had a lot more TT kms to work with that year and he was a more reliable third week time trialler than Roglic.