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.

Execution · Practiced Mastery
Cornering execution over memorisable circuits, with light prediction in wheel-to-wheel multiplayer.

Execution · Practiced Mastery
Open-world demolition testing combat execution and creative structural destruction planning.
Grid 2 leans Execution (Practiced Mastery); Red Faction: Guerrilla Re-Mars-tered leans Execution (Practiced Mastery).
Grid 2 leans a little harder on execution, though the gap is small.
Grid 2
Car control through corners is the entire moment-to-moment test
Red Faction: Guerrilla Re-Mars-tered
Hammer swings, driving and firefights under EDF pressure need hands
Grid 2 leans a little harder on reads, though the gap is small.
Grid 2
Online wheel-to-wheel adds light positional prediction
Red Faction: Guerrilla Re-Mars-tered
EDF response is scripted escalation, not adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grid 2
Tracks are fixed and fully visible
Red Faction: Guerrilla Re-Mars-tered
Open world is fixed once explored
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Grid 2
Racing lines, braking points and car selection are studyable
Red Faction: Guerrilla Re-Mars-tered
Choosing demolition approaches and upgrade routes rewards planning
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.