head to head
Perfect Dark asks more than Tom Clancy's Splinter Cell: Conviction, and the gap is reads.

Execution · Practiced Mastery
N64 spy FPS famed for gadget-heavy missions and bot-filled multiplayer.

Execution · Practiced Mastery
An action-leaning stealth entry where aggressive optimal clears replace pure ghosting.
Perfect Dark leans Execution (Practiced Mastery); Tom Clancy's Splinter Cell: Conviction leans Execution (Practiced Mastery).
Perfect Dark leans a little harder on execution, though the gap is small.
Perfect Dark
N64 manual aim and tight mission play
Tom Clancy's Splinter Cell: Conviction
Mark-and-execute flow rewards quick, accurate play
Perfect Dark leans clearly harder on reads.
Perfect Dark
Multiplayer and clever sims add some human-style adaptation
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.
Perfect Dark
Mission scripting fixed once learned
Tom Clancy's Splinter Cell: Conviction
Mild uncertainty in enemy search behavior
Tom Clancy's Splinter Cell: Conviction leans a little harder on optimization, though the gap is small.
Perfect Dark
Objective routing on harder difficulty tiers
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.