Look at it this way...
Unitl Singapore he had 1 win. All of a sudden, he 'finds his groove' at the same time that Red Bull sorts out their biggest problem - straight line speed and adopts their double DRS system... and Vettel wins 4 in a row pretty comfortably.
Also take into account 2 DNFs by Alonso (1 more than Vettel) and despite the superior car, he would very likely be trailing Alonso despite having 2 more wins.
Australia Jenson Button
Malaysia Fernando Alonso
China Nico Rosberg
Bahrain Sebastian Vettel
Spain Pastor Maldonado
Monaco Mark Webber
Canada Lewis Hamilton
Europe Fernando Alonso
Great Britain Mark Webber
Germany Fernando Alonso
Hungary Lewis Hamilton
Belgium Jenson Button
Italy Lewis Hamilton
Singapore Vettel
Japan Vettel
Korea Vettel
India Vettel
He owes Redbull and Adrian Newey for every victory he's had. I'm just sorry we're not watching Vettel chasing, my opinion might change. Not possible to tell right now.