head to head
Call of Duty: Modern Warfare 2 asks more than TowerFall Ascension, and the gap is optimization.

Execution · Competitive PvP
Blockbuster 2009 sequel famous for killstreak chains and frantic multiplayer.

Execution · Competitive PvP
Couch-competitive archery brawler decided by twitch arrows and reading your friends.
Call of Duty: Modern Warfare 2 leans Execution (Competitive PvP); TowerFall Ascension 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.
Call of Duty: Modern Warfare 2
Fast time-to-kill rewards raw aim and reflex
TowerFall Ascension
Arrow aim, dodges, and arrow catches are razor-tight
TowerFall Ascension leans a little harder on reads, though the gap is small.
Call of Duty: Modern Warfare 2
Outguessing human rotations and flanks
TowerFall Ascension
Couch PvP is constant mutual prediction and baiting
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Modern Warfare 2
Spawn flips and killstreak randomness
TowerFall Ascension
Random powerup chests and variants spice rounds
Call of Duty: Modern Warfare 2 leans clearly harder on optimization.
Call of Duty: Modern Warfare 2
Killstreak economy, loadout and map knowledge
TowerFall Ascension
Small fixed arenas leave little system to solve
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.