head to head
Call of Duty: Modern Warfare 2 asks more than Marvel vs. Capcom: Clash of Super Heroes, and the gap is variance.

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

Execution · Competitive PvP
High-speed tag-team execution and human prediction in gleeful early-Versus chaos.
Call of Duty: Modern Warfare 2 leans Execution (Competitive PvP); Marvel vs. Capcom: Clash of Super Heroes 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
Marvel vs. Capcom: Clash of Super Heroes
Chain combos, assists and infinites demand fast precise hands
Marvel vs. Capcom: Clash of Super Heroes leans a little harder on reads, though the gap is small.
Call of Duty: Modern Warfare 2
Outguessing human rotations and flanks
Marvel vs. Capcom: Clash of Super Heroes
Baiting a human's assist call or super is the duel
Call of Duty: Modern Warfare 2 leans clearly harder on variance.
Call of Duty: Modern Warfare 2
Spawn flips and killstreak randomness
Marvel vs. Capcom: Clash of Super Heroes
Hidden characters aside, everything is public
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Modern Warfare 2
Killstreak economy, loadout and map knowledge
Marvel vs. Capcom: Clash of Super Heroes
Team composition and infinite-combo knowledge define the 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.
full breakdown
Call of Duty: Modern Warfare 2 →
full breakdown
Marvel vs. Capcom: Clash of Super Heroes →