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.

Optimization · Practiced Mastery
Series finale blending stealth with active battlefields and heavy cinematics.

Execution · Practiced Mastery
An action-leaning stealth entry where aggressive optimal clears replace pure ghosting.
Metal Gear Solid 4: Guns of the Patriots leans Optimization (Practiced Mastery); Tom Clancy's Splinter Cell: Conviction leans Execution (Practiced Mastery).
Tom Clancy's Splinter Cell: Conviction leans a little harder on execution, though the gap is small.
Metal Gear Solid 4: Guns of the Patriots
flexible gunplay alongside sneaking
Tom Clancy's Splinter Cell: Conviction
Mark-and-execute flow rewards quick, accurate play
Tom Clancy's Splinter Cell: Conviction leans a little harder on reads, though the gap is small.
Metal Gear Solid 4: Guns of the Patriots
battlefield factions act on scripts
Tom Clancy's Splinter Cell: Conviction
Enemies search via scripted last-known-position logic
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid 4: Guns of the Patriots
mid-battle chaos mostly cosmetic
Tom Clancy's Splinter Cell: Conviction
Mild uncertainty in enemy search behavior
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid 4: Guns of the Patriots
camo, gear, and route knowledge per act
Tom Clancy's Splinter Cell: Conviction
Encounter rooms have clear optimal clear orders
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
Metal Gear Solid 4: Guns of the Patriots →
full breakdown
Tom Clancy's Splinter Cell: Conviction →