I guess so, but if the universe collapsed and all plants (the Green) were to die, then the animals (the Red) would not be far behind. And since Doctor Manhattan is part of the Red, he may just kill himself by killing the Green. But I guess he would get the temporarily win until he dies himself.
Here is how I see it. Manhattan could go around the universe and destroy every planet with plants, it is within his power. However, Swamp Thing can not in any way harm Manhattan. Both are virtually immortal, but if the universe collapsed only one of them would even stand a remote chance of surviving. That is why I would give the win to Manhattan.
I'd say it's fifty fifty if his coin flip says he can kill Riddler or not. It also depends on if Riddler is spinning him through one of his puzzles or not. Who is toying with who in this scenario? because I highly doubt they would randomly meet and fight somewhere, one would be planning to defeat the other.
@wolfdragon123 Very unwise and uneducated choice, Wolfdragon... If people are going to make choices like that and pick the character that is clearly inferior, in every way, they should be able to provide support and an explanation for the reason they made the uneducated choice. So, tell me Wolfdragon: how could The Riddler possibly win a battle against Two-Face? Provide evidence to fully support your incorrect hypothesis on who truly would win in this battle.
