The world champion's fifth win of the 2013 Formula 1 season means he is now 46 points clear of nearest rival Fernando Alonso with eight races to go.
Lewis Hamilton and Kimi Raikkonen are another 12 and 17 points adrift respectively.
"For sure that's a positive message today, but I'm more happy to win the race," said Vettel.
"It's a fantastic track. When the car works well you don't want the race to stop.
"As the car was getting lighter and lighter, I was happy on primes and the car was pleasant to drive.
"I didn't think about the championship or points. I know the higher up you finish, the better it is...
"This is such a great circuit and this was another great memory today. That is what I was focusing on.
"Regarding the championship, there is still a long way to go."
Raikkonen suffered his first retirement of the season at Spa when his Lotus struck brake problems.
But Vettel did not think that ruled Raikkonen out of the title hunt despite the 63-point deficit the Finn now faces.
"There are still more than 63 points you can score this season..." said Vettel.
"It is obviously a shame for him, but these things can happen.
"We had a technical failure at Silverstone and lost the race. We are still pushing the cars on the limit and getting everything out of them, and things that are on the limit can break."
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