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 · Practiced Mastery
Arena fighting where builds and combo execution meet light PvP prediction.

Execution · Practiced Mastery
A platform of millions of user-created multiplayer games spanning every genre, played mostly by younger audiences.
Dragon Ball: Xenoverse 2 leans Execution (Practiced Mastery); Roblox leans Execution (Practiced Mastery).
Dragon Ball: Xenoverse 2 leans a little harder on execution, though the gap is small.
Dragon Ball: Xenoverse 2
Combo strings and vanish timing need moderate hands
Roblox
Many popular experiences are obby/PvP tests of hands
Dragon Ball: Xenoverse 2 leans a little harder on reads, though the gap is small.
Dragon Ball: Xenoverse 2
PvP opponents bait supers and punish habits
Roblox
Multiplayer experiences pit you against other kids' minds
Roblox leans a little harder on variance, though the gap is small.
Dragon Ball: Xenoverse 2
QQ Bang crafting and drop rates randomise builds
Roblox
User-generated content means constant unknown systems
Dragon Ball: Xenoverse 2 leans a little harder on optimization, though the gap is small.
Dragon Ball: Xenoverse 2
Build stats and skill loadouts shape every matchup
Roblox
Grind economies and trading reward system mastery
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.