I think Perez have a genuine chance to win this.
I don't think it's his call. There's no available seat for him. Although I'm sure the 3 tier team will want him. But not a smart move.
I don't think a Sauber can beat Vettel, they can take anyone else I think but Vettel is a class above.
I don't think any team would intentionally screw up one of their cars. Too much money involved with WCC points, and especially McLaren needs every Dollar now.
Speed said they admitted to a "bad setup" on Lewis' car this weekend, rendering the car 1+ secs slower than Button's. If not intentional, very careless shall we say?