Just to show the effects of the draft at Macau.
Da Costa, the only man who never benefited of the draft during the whole main race(he was leading from turn 1 exit to the finish), was
slower than
anyone else who completed 2 laps or more, both in sector 1, and at the sector 1 speed trap. (sector 1 is the run through start/finish to the Lisboa braking point)
Da Costa's best speed was 258.2 kph. The fastest guy was Buller in 274.5. The top 15 was in the 274-267 range. The second least fastest guy was Roda in 261.9.
Da Costa's fastest sector 1 was a 24.37. The fastest guy was Sims with a 23.28. The top 15 was in the 23.3-23.8 range. The second least fastest guy was Roda with a 24.24.
On the other hand, Felix was second fastest both in sector 2(mountain section) and 3(Meclo exit to start/finish), which was enough to secure fastest lap(and - I'm looking to you stats geeks - "hat trick" and "grand slam"). For the record, the fastest in the sector 2 mountain section was Pascal Wehrlein.
Source:
http://www.mstworld.com/Results/2012/12012fm3.pdf
It shows that you need to be fast in the mountain section to run away from the chasing group. Also, in case of a Safety Car, you really need a mega restart to stay in front.