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.

Execution · Competitive PvP
Shot timing and play-calling against opponents who scheme around your habits.

Execution · Competitive PvP
A football sim testing throw timing and play-calling prediction against opponents.
NBA 2K16 leans Execution (Competitive PvP); NFL Quarterback Club 98 leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K16
Shot-stick timing and dribble moves gate every possession
NFL Quarterback Club 98
Passing, dodging and timing decides plays
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K16
Online opponents adjust defensive schemes against your tendencies
NFL Quarterback Club 98
Human opponents read formations, demanding counter-prediction
NFL Quarterback Club 98 leans a little harder on variance, though the gap is small.
NBA 2K16
Shot RNG and card packs add bounded randomness
NFL Quarterback Club 98
Catch and fumble outcomes carry simulated randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K16
Playbooks, rotations and roster building reward deep study
NFL Quarterback Club 98
Playbook selection and roster tactics run deep
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.