Adult Superboy(Kon-El) Vs. Wonderman
This is the scenario both Kon-El/Superboy and Wonderman don't have any prep time in this battle so they wont know each others strengths or weaknesses. The battleground for the fight between these two will take place in far off uninhabited planet that both of them dont know about making both of them capable of causing massive damage to the place without harming any civillians. Also I would like to point out that since this is the Adult Kon-El/Superboy from the "Titans Tomorrow" storyline which makes him more ruthless and more powerful then the normal Kon-El/Superboy.