You cannot get a meaningful picture of the Meteors capabilities, during WWII, because of its extremely limited deployment. It seems to me that the British made sure they could build Jet technologies, just in case they were needed, and then more or less left the technology at that experimental state until after the war. To determine the true potentialities of the Meteor one has to look at its postwar applications, but then that raises the tricky question of what might have happened to the me 262 if it had been allowed to develop postwar in the same fashion.
My opinion, based on very little admittedly is that the Me 262 had the advantages of speed, and firepower, it seems likley that the Meteor could outturn the 262. I dont know about dive or climb characteristics. Whilst the Me 262 had a firepower advanatage, the Meteor carried more than enough punch to deliver lethal blows in a short space of time. It seems a lot would depend on the combat situation and the pilots flying the aircraft in that fight.....