No this is too simplistic. Quintana attack ahead and got almost a minute bonus. From the moment Vinge attacked to the finish he actually gained far more than 59s on Q. You're forgetting Quintana was ahead..
Naah, he lost a minute to Thomas, 47 seconds to Gaudu, was dropped by Yates. He was dropping all of them wherever he wanted, including Galibier before Grannon. Better pacing in that stage and he doesn't lose more than 30 seconds if any time at all.
That totally changes the race dynamic.