Then I guess we're screwed...
Seriously, the prologues in the (exceedingly sparse) story-mode all seem to make perfect sense with the events of Iron Fit 5: Asuka never found Feng and Lei went home; Raven fought Heihachi but had to retreat in the middle of the fight; Bruce reunited with Kazuya and later on helped him in his hostile takeover of the G-Corporation; Paul tired himself out in his fight with Kuma, leaving him unable to proceed any further in the tournament; Ganryu got lost in the later stages of the tournament, which lead to him stumbling across the Forrest-Restoration data that he used to propose to Julia, who turned him down; Hwoarang defeated Jin while he was unable to concentrate, causing him to transform into Devil Jin who nearly killed him, causing Baek to drop out to see his pupil in the hospital.
Basically, accepting the prologues as true canon seems pretty worthwhile. The problem with the Scenario Campaign is that Hwoarang and Miguel's prologues don't mention anything about them becoming rebellion-leaders. JACK 6's prologue has Jane getting annoyed that so many copy-cat JACKs are being used by the G Corporation; his scenario campaign stage has him as the boss of a level filled with those same JACKs. Also, the prologues make it clear that Paul, Steve and Law were all completely active in their tournament matches while the campaign has them messing around doing other things. My best guess is that the Campaign is canon for Lars and Alisa but the battles themselves were not (unless the character they fought was presented in a cut-scene or in some way valuable to the plot i.e. Lili, Wang, Lee or Julia).
edited 13th Mar '12 1:44:37 AM by Alucard