that planet f1 explanation of the ruling is pretty funny, sounds like the have mixed up their ruling.
i would say Lewis did gain an advantage cutting the corner, not by much, prob less than a second, but a slight advantage, if he had followed kimi through the corner he would have been a bit further behind him coming out of the corner, but given the speed he had been catching him, he would have more than likely still got him going into the next corner.
its not like he came from miles behind, going into the corner he was along side, a few more inches and he would have passed him in the corner and their would not be this issue.
i think he did the right thing letting kimi back past, i think the thing is they are saying he did not give him the advantage back (less than 1 sec) which would have been their if he followed him out of the corner. Its pretty harsh ive seen races in the past where people have been a long way back, taken a crazy overtake attempt from miles back, pass on the grass, come back on let the guy passed and pull right in behind, making up 2 or 3 seconds, and not be punished.
it is crazy that he got punished for the his and massa got nothing for his pit lane antics the last race.
i'd be surprised if the give him the win back, and its a real shame, the races are less fun now that they have been for years, the just making it worse.