Vettel admitted making a mistake in stopping his car in his pit on cold tyres that contributed to that loss of position, but he still criticised the VSC system because he feels it contains a weakness in the software that allows drivers to go faster than they should be able to.
"It's the same for everyone but the FIA is supplying us with a system that makes us follow a delta time, and everybody has to slow down by, I think, 40%, but I think everybody's aware you can have a faster way to go under VSC than just follow the delta - by saving distance," Vettel said.
What is het talking about? The VSC means the track is devided in marshal sectors and drivers are given een fixed time for each sector. Which means the line taken in a sector does not matter, because you always have the same for that sector.