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
Supercell's snappy top-down team brawler built around three-minute objective fights.

Reads · Mind & Math
Play-call prediction against humans layered over scheme study and stick skill.
Brawl Stars leans Execution (Competitive PvP); Madden NFL 23 leans Reads (Mind & Math).
Brawl Stars leans a little harder on execution, though the gap is small.
Brawl Stars
Aim, dodging, and ability timing in real time
Madden NFL 23
Stick skills on throws, moves and tackles matter every play
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Brawl Stars
Human teams rotate, bait supers, and adapt
Madden NFL 23
Online play-calling is a constant disguise-and-bait duel
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Brawl Stars
Bush ambushes and power-cube spawns hide information
Madden NFL 23
Fumbles, tips and DDA-feeling rolls swing drives
Madden NFL 23 leans a little harder on optimization, though the gap is small.
Brawl Stars
Brawler matchups and map strategy are learnable
Madden NFL 23
Scheme knowledge, matchups and Ultimate Team economy are solvable
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.