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

Execution · Competitive PvP
Wrestling-style timing duels with grapple prediction against human opponents.

Execution · Competitive PvP
Twitch ball control plus constant prediction of human defenders on known maps.
Def Jam Vendetta leans Execution (Competitive PvP); TagPro leans Execution (Competitive PvP).
TagPro leans a little harder on execution, though the gap is small.
Def Jam Vendetta
Grapple timing and reversal windows demand sharp inputs
TagPro
Ball handling, boosts and juke precision decide grabs
TagPro leans a little harder on reads, though the gap is small.
Def Jam Vendetta
Human matches turn on predicting grapples versus strikes
TagPro
Human defenders adapt to your routes every match
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Def Jam Vendetta
Nothing hidden once movesets are learned
TagPro
Maps and power-up timers are fully visible
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Def Jam Vendetta
Character move pools and reversal systems are mappable
TagPro
Map routes, button plays and power-up timing are studyable
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.