head to head
NBA 2K16 asks more than Tecmo Bowl, and the gap is execution.

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

Reads · Competitive PvP
A four-play guessing duel where picking the opponent's call wins drives.
NBA 2K16 leans Execution (Competitive PvP); Tecmo Bowl leans Reads (Competitive PvP).
NBA 2K16 leans clearly harder on execution.
NBA 2K16
Shot-stick timing and dribble moves gate every possession
Tecmo Bowl
Stick skill on runs and dives matters but stays simple
Tecmo Bowl leans a little harder on reads, though the gap is small.
NBA 2K16
Online opponents adjust defensive schemes against your tendencies
Tecmo Bowl
Guessing the opponent's one play call is the famous mind-game
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K16
Shot RNG and card packs add bounded randomness
Tecmo Bowl
Outcomes wobble on tackle rolls but little stays hidden
NBA 2K16 leans a little harder on optimization, though the gap is small.
NBA 2K16
Playbooks, rotations and roster building reward deep study
Tecmo Bowl
Roster strengths and play-call odds are quickly solved
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.