Brawn insists that Rosberg was low on fuel too... Whether he just told Rosberg that to slow his down is open to debate
I imagine Mercedes see Hamilton as their best hope for the championship, so wanted to give him the benefit of the points. But you can also see the team point of view. 3rd and 4th or 3rd and 4th... the team get the same points either way, but have one driver pass another unnecessarily and have them take each other out? - no points at all.
Plus, if Rosberg had gone past Hamilton, odds are he'd have made a hard charge to catch Webber... even more likely to go off chasing tenths of a second - safest bet for the team was to keep them in safe points-winning positions.
On another note, Lewis must be pleased to see how badly McLaren are doing...
