head to head
Dragon Ball Z: Budokai Tenkaichi 2 asks more than WCW Nitro, and the gap is reads.

Execution · Competitive PvP
Arena-fighter execution and couch-versus prediction across an enormous anime roster.

Execution · Practiced Mastery
Tests arcade grapple timing with shallow systems underneath.
Dragon Ball Z: Budokai Tenkaichi 2 leans Execution (Competitive PvP); WCW Nitro leans Execution (Practiced Mastery).
Dragon Ball Z: Budokai Tenkaichi 2 leans a little harder on execution, though the gap is small.
Dragon Ball Z: Budokai Tenkaichi 2
Beam clashes, vanish timing and arena movement reward fast hands
WCW Nitro
Fast grapple timing in an arcade-paced wrestling frame
Dragon Ball Z: Budokai Tenkaichi 2 leans clearly harder on reads.
Dragon Ball Z: Budokai Tenkaichi 2
Versus friends, baiting transformations and dodges matters
WCW Nitro
Human versus play rewards mild move prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball Z: Budokai Tenkaichi 2
Full movesets are public knowledge
WCW Nitro
Little randomness beyond AI behaviour
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball Z: Budokai Tenkaichi 2
A 120-character roster of matchup and item knowledge
WCW Nitro
Learning each wrestler's move list is quickly exhausted
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.