Well, using
ExtremeNinja 's logic,
Sebastian Vettel is better than the following drivers:
Mark Webber, who was better than Nico Rosberg, David Coulthard, Nick Heidfeld, Antonio Pizzonia,
Calvin Christian Klien, Justin Wilson, Alex Yoong and Anthony Davidson
Now, Nico Rosberg was also faster than the following drivers, so this means that Vettel must be better than them as well:
Michael Schumacher, Kazuki Nakajima, Alex Wurz
Now, Michael Schumacher provides a boon, as he was better than Barrichello, Massa, Irvine, Verstappen,Nelson Piquet, Patrese, Brundle. Furthermore, going back to the Webber thread, Heidfeld scored more points than Raikkonen, so Heidfeld must be better than Raikkonen as well (Which means also better than Montoya and de la Rosa) de la Rosa is also faster than Karthikeyan, so he can go on the list too (although that's not really a surprise)
Furthermore, Raikonnen was faster than Fisichella whilst at Ferrari, so that means that since Fisichella was faster than Button whilst at Benetton, that Raikkonen (and therefore Vettel) must also be better than Button; Button beat Hamilton (who also beat Alonso in 2007) in 2011, so that puts Vettel ahead of all three of them. Fisichella and Hamilton both beat Kovalainen, so that puts Vettel above Kovi as well. Furthermore, Raikkonen has been better than Grosjean, so there's another scalp. Kovi has also been faster than Petrov all this season...
Since we've got Button and Schumacher in the mix, they were both better than Barrichello, who was better than Maldonado in 2011, so Maldonado goes in (And Maldo was better than Bruno Senna this year, so he can go in as well!) Going down to GP2 (Where due to the fact that cars are identical, we can compare across teams), Perez was beaten by Maldonado, and Perez has been generally the faster of the 2 Saubers this season, so that adds Perez and Kobayashi to the list;
Nico Hulkenberg also scored fewer points than Rubens whilst at Williams in 2010, so that adds the Hulk to the list, and also by default di Resta (Who has been slower than the Hulk for most of this season).
Jarno Trulli also needs considering, as he was beaten over the course of a season by Jenson Button, but Trulli also beat Timo Glock over the course of a season at Toyota. - and Glock is currently faster than Pic.
So, of the current grid, Vettel MUST be better than:
Webber
Rosberg
de la Rosa
Karthikeyan
Massa,
Raikkonen
Schumacher
Button
Hamilton
Alonso
Kovalainen
Petrov
Grosjean
Maldonado
Bruno Senna
Nico Hulkenberg
Paul di Resta
Glock
Pic
Perez
Kobayashi
So, the only 2 drivers on the current grid that I can't PROVE that Vettel MUST be better than are Vergne and Ricciardo
Of course, I might just be missing the point that it might depend on the car/driver/season combination.....