head to head
Super Smash Bros. Brawl asks more than Agar.io, and the gap is execution.

Reads · Competitive PvP
A browser arena where your cell eats smaller players and flees bigger ones.

Reads · Competitive PvP
The Wii entry whose slower pace and infamous random tripping pushed Smash toward defensive mind games.
Agar.io leans Reads (Competitive PvP); Super Smash Bros. Brawl leans Reads (Competitive PvP).
Super Smash Bros. Brawl leans clearly harder on execution.
Agar.io
Mouse steering and split timing
Super Smash Bros. Brawl
Slower engine lowers the ceiling but spacing still needs hands.
Super Smash Bros. Brawl leans a little harder on reads, though the gap is small.
Agar.io
Baiting and predicting human blobs decides fights
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.
Agar.io
Spawn locations and lobby makeup random
Super Smash Bros. Brawl
Random tripping injects genuine uncontrollable RNG into movement.
Super Smash Bros. Brawl leans a little harder on optimization, though the gap is small.
Agar.io
Split-merge math is shallow but real
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.