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

Optimization · Practiced Mastery
Action RPG prequel to FFVII whose combat spins a slot machine for buffs.

Execution · Practiced Mastery
A post-apocalyptic shooter balancing stealth precision with careful resource management.
Crisis Core: Final Fantasy VII leans Optimization (Practiced Mastery); Metro: Last Light Redux 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.
Crisis Core: Final Fantasy VII
real-time dodging and attack timing
Metro: Last Light Redux
aim and stealth timing matter
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Crisis Core: Final Fantasy VII
no adaptive opponent
Metro: Last Light Redux
mutants and humans are scripted
Crisis Core: Final Fantasy VII leans a little harder on variance, though the gap is small.
Crisis Core: Final Fantasy VII
DMW slot reels randomize limit breaks and levels
Metro: Last Light Redux
resource scarcity and encounters random
Crisis Core: Final Fantasy VII leans a little harder on optimization, though the gap is small.
Crisis Core: Final Fantasy VII
materia fusion is a deep solvable system
Metro: Last Light Redux
resource management and routing solvable
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.