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.

Reads · Pure Mind Games
An asymmetric horror multiplayer game built on reading hunter-survivor psychology.

Reads · Competitive PvP
The Wii entry whose slower pace and infamous random tripping pushed Smash toward defensive mind games.
Identity V leans Reads (Pure Mind Games); Super Smash Bros. Brawl leans Reads (Competitive PvP).
Super Smash Bros. Brawl leans a little harder on execution, though the gap is small.
Identity V
chase execution, skill-check timing
Super Smash Bros. Brawl
Slower engine lowers the ceiling but spacing still needs hands.
Identity V leans a little harder on reads, though the gap is small.
Identity V
asymmetric PvP hunter/survivor mind games
Super Smash Bros. Brawl
Defensive bait-and-punish yomi dominates its floaty neutral.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Identity V
random map/item spawns
Super Smash Bros. Brawl
Random tripping injects genuine uncontrollable RNG into movement.
Identity V leans a little harder on optimization, though the gap is small.
Identity V
character build, map knowledge
Super Smash Bros. Brawl
Matchup knowledge and ledge play reward study within a campy meta.
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.