head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Optimization · Practiced Mastery
Sandbox warfare testing directional combat skill atop an optimisable army and trade economy.

Execution · Practiced Mastery
Tests deliberate aim and squad-level planning against scripted insurgent encounters.
Mount & Blade leans Optimization (Practiced Mastery); Operation Flashpoint: Red River leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Mount & Blade
Directional blocking and couched-lance timing demand real skill
Operation Flashpoint: Red River
Authentic ballistics punish sloppy aim and positioning
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mount & Blade
AI lords and battle tactics are mappable scripts
Operation Flashpoint: Red River
Insurgent AI is scripted spawns, not an adapting mind
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mount & Blade
World events, prices and tournaments shuffle each campaign
Operation Flashpoint: Red River
Enemy placements are unknown until contact
Mount & Blade leans a little harder on optimization, though the gap is small.
Mount & Blade
Army composition, trade economy and fief management drive conquest
Operation Flashpoint: Red River
Loadouts, class roles and approach planning decide engagements
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.