This fight is between the two fictional characters who are so Singularly determined that even multiple parallel versions of themselves would still essentially have the same goal and personality.
Location:
The main MCU Earth is the Root world.
Round one:
POTUS Valentine with D4C vs Thanos with Complete Infinity Gauntlet.
Round two:
POTUS Valentine with Love Train vs Thanos with Complete Infinity Gauntlet.
Dimensional rules(as I understand a them)
-Thanos cannot travel to a different world line.
-D4C cannot obliterate Thanos with his parallel self if Thanos actively uses the gauntlet to prevent it.
-Thanos using the soul stone can perceive D4C and affect it, but this isn't a passive ability and he would have to actively seek out D4C.
-Lucy is a non-factor for Love Train just to reduce on the Convolutedness of the encounter.
-If Thanos summons alternate versions of himself from his world line, the Obliteration effect of D4C doesn't apply.
Debatable rules (consider them if you like)
-D4C can possibly find another infinity gauntlet in another world line and steal it.
-The effectiveness of Infinity gauntlet in different world lines is questionable and possibly limited.
Location:
The main MCU Earth is the Root world.
Round one:
POTUS Valentine with D4C vs Thanos with Complete Infinity Gauntlet.
Round two:
POTUS Valentine with Love Train vs Thanos with Complete Infinity Gauntlet.
Dimensional rules(as I understand a them)
-Thanos cannot travel to a different world line.
-D4C cannot obliterate Thanos with his parallel self if Thanos actively uses the gauntlet to prevent it.
-Thanos using the soul stone can perceive D4C and affect it, but this isn't a passive ability and he would have to actively seek out D4C.
-Lucy is a non-factor for Love Train just to reduce on the Convolutedness of the encounter.
-If Thanos summons alternate versions of himself from his world line, the Obliteration effect of D4C doesn't apply.
Debatable rules (consider them if you like)
-D4C can possibly find another infinity gauntlet in another world line and steal it.
-The effectiveness of Infinity gauntlet in different world lines is questionable and possibly limited.
