Like all things if modeled correctly the Mig would out perform the Saber, with all the resulting screams about historic facts.
It would depend on which Sabre would be modeled. The MiG 15 had a clear advantage over early model F-86s, in terms of rate of climb, and maneuverability and ceiling. The Sabre's performance was better at lower altitudes. When the "all flying" tail was introduced in the F-86E, the advantages the MiG had was narrowed and with the "6-3" wing introduced in the F-86F-30, the Sabre erased any advantages the MiG 15 had over it.
The real facts are, NEVER has any conflict pointed out "the pilot not the plane" like the Korean conflict. When our guys ran into Russian pilots in those Migs they got a huge suprise.
Soviet and Chinese claims of shooting down over 600 Sabres is grossly exaggerated. USAF records show that 224 Sabres were lost to all causes, including non-combat losses. Also, many Sabres were lost due to enemy AA and not from A2A engagements.
ack-ack