head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Competitive PvP
Fast mech duels testing piloting execution and prediction of human opponents.

Execution · Competitive PvP
Free-to-play hero shooter where loadout cards customize champions in objective team fights.
Mecha Break leans Execution (Competitive PvP); Paladins leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Mecha Break
Boost management and aim in fast mech duels demand dexterity
Paladins
Hitscan aim and ability timing in firefights
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mecha Break
Human pilots adapt positioning and engage timing constantly
Paladins
Human teams flank, bait ults, and adapt
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mecha Break
Match conditions are mostly fixed beyond extraction-mode loot
Paladins
Card draft order adds mild run variance
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mecha Break
Mech loadouts and role matchups reward roster knowledge
Paladins
Loadout card builds and item counter-buying
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.