head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Practiced Mastery
An arena fighter mixing combo execution, build grinding and human prediction online.

Execution · Practiced Mastery
Timing-based grapple execution with light opponent prediction in multiplayer matches.
Dragon Ball: Xenoverse leans Execution (Practiced Mastery); WCW Mayhem leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball: Xenoverse
3D arena combos, vanishes and ki management need practiced hands
WCW Mayhem
Timing grapples, reversals and strikes decides every match
Dragon Ball: Xenoverse leans a little harder on reads, though the gap is small.
Dragon Ball: Xenoverse
Online PvP rewards predicting human mixups; PvE is scripted
WCW Mayhem
Human opponents in versus add a modest prediction layer
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball: Xenoverse
Skill drops from missions roll randomly
WCW Mayhem
Weapon spawns and AI behaviour add minor noise
Dragon Ball: Xenoverse leans a little harder on optimization, though the gap is small.
Dragon Ball: Xenoverse
Build crafting and attribute allocation shape PvP viability
WCW Mayhem
Learning move lists and match-type quirks is a fixed problem
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.