Oh look, the same that has happened in every qualifying for years, the best drivers don't NEED to show their pace to get through to Q3, so they don't wear down tires when they don't need to.
Lets see, WE've had Brundle bang on about Mclaren looking close, loads of people about Mclaren looking good in changing conditions PURELY because he put in the fastest lap on inters while everyone else had given up on the inters(but would all have gone faster if they stayed on them) and people talking up Rosberg, again including Brundle, outperforming Hamilton because when it doesn't matter Rosberg was faster, and when it mattered, Hamilton blew Rosberg away......
Will people ever learn, Hamilton ended up 8/10th's up on Rosberg when actually going for fastest time, and outperformed him both in race and quali pace last week.
Some guys have a pace, find it, stick on it, other guys drive within the limit because they can replicate that over and over again and compare setups better, then they put in an ultimate lap when required.
Bit of a shame that not many people copied Vettel in getting new tires, it seemed painfully obvious everyone on fresh tyres would beat the rest, and Hamilton was the fastest of those on older tyres. Its early days yet but last year Merc made a lot of strategy errors and we're already seeing signs of the same. Going for a 2 stop last week, not putting on fresh rubber this week, Hamilton might well have been looking at pole on fresh inters.