My take on the tyre situation:
After Hamilton and Button made their stops on lap 40 and 42, Lewis was 7 seconds or so ahead. Now the idea with the softs vs. super softs is that you use the speed advantage the super softs do have (which is a fact).
But for some reason (2 possible reasons, to be precise) Lewis was slower on the super soft tyre than Jenson, whom was on softs. There can be 2 reasons for this^^.
1- Technically (because of track conditions) the soft tyres weren't fast enough.
2- When Hamilton's side of the garage realised Button was going to try and make it to the end on the softs, they decided to do the same with Lewis whom was on super softs. So they asked Lewis to drive slower and preserve them to the end.
From a strategic pow, 2 is...well...flawed
. Super softs simply have no chance of making that distance while keeping a reasonable pace. So if I were in their boots, I would never have tried to do that (assuming that's what they attempted at).
Now that the 2nd reason is out of the way, let's have a look at the first. As a team member (strategist, race engineer etc.) I want to make my driver win the race. I have put him on super softs, to make him push to open a pitstop worth of gap from another driver who is on softs and isn't stopping again. But even though my driver is pushing, the one in second place is actually closing the gap, on -which are supossed to be- slower tires !
Now I hear some of you whispering "hindsight", but actually these were going through my mind prior to Hamilton spinning. I (and I'm sure many other people) knew that the best thing to do at that point was to put Hamilton on soft tyres before the pursuers had a chance to close whatever advantage he had in hand (~7 seconds it was), and then ask him to push and overtake.
But form a different pow, the team were probably anticipating rain so maybe that's why they kept Hamilton out. It's worth mentioning that Hamilton ended his own chances when he spun and made a dangerous recovery. As soon as I saw that, I knew what was on the cards. Hamilton still could've won without the spin. Or with soft tyres instead of super softs on lap 40. In which case he'd have had to preserve the tyres 2 laps more than Button did