head to head
ibb & obb asks more than Red Dead Redemption 2, and the gap is optimization.

Optimization · Practiced Mastery
A serene co-op puzzle platformer where two blobs flip across a gravity-split world together.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
ibb & obb leans Optimization (Practiced Mastery); Red Dead Redemption 2 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.
ibb & obb
Synchronised jumps across gravity boundaries need timing
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Red Dead Redemption 2 leans a little harder on reads, though the gap is small.
ibb & obb
Pure cooperative puzzle, no adversary
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Red Dead Redemption 2 leans a little harder on variance, though the gap is small.
ibb & obb
Everything is deterministic
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
ibb & obb leans clearly harder on optimization.
ibb & obb
Solving the dual-gravity puzzles is the real game
Red Dead Redemption 2
Loadouts and routes solvable but loose.
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.