I've done a lap time analysis of Red Bull and McLaren to see where the tyre strategy went wrong for Red Bull. It looks fairly obvious.
You can see that both prime and option tyres were capable of runing 1:20,000 times after the first pitstop. The used tyres of both specs were never capable of doing that speed for more than one lap.
McLaren lost performance from lap four onward and switched both drivers to new primes from lap six.
Red Bull simply switched their drivers too late to new tyres. Webber came close to the 1:20 for one lap and ran solidly in the 1:21.7 until he hit degradation on lap 10 and they switched him in lap 13. Vettel was doing slightly better and was able to do 1:21.0 when he also bottomed out in lap 10. He had to do even one more lap on the used primes to have his tyres changed in lap 14.
Red Bull let their drivers miss between 1.0-1.7 s per lap for seven laps. So this was a 7 - 13 s handicap the drivers did incur due to a gamble that went wrong. Red Bull should have known that both specs of tyres in new condition would have been faster. The team screwed up.