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
The template Far Cry: outposts, predators, and a tropical sandbox.

Execution · Practiced Mastery
Cinematic third-person shooter campaign of set-piece battles across a dying Cybertron.
Far Cry 3 leans Execution (Practiced Mastery); Transformers: Fall of Cybertron leans Execution (Practiced Mastery).
Transformers: Fall of Cybertron leans a little harder on execution, though the gap is small.
Far Cry 3
Shooting and stealth fundamentals matter.
Transformers: Fall of Cybertron
Third-person gunplay and transform-dodging carry combat
Transformers: Fall of Cybertron leans a little harder on reads, though the gap is small.
Far Cry 3
Pirate AI uses fixed alert patterns.
Transformers: Fall of Cybertron
Multiplayer modes add some human opposition
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Far Cry 3
Wildlife and outpost spawns randomized.
Transformers: Fall of Cybertron
Scripted campaign with minor drop randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Far Cry 3
Skill trees and weapon mods quickly mastered.
Transformers: Fall of Cybertron
Weapon upgrades and loadouts reward light 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.