head to head
Virtua Tennis 4 asks more than Need for Speed II, and the gap is reads.

Execution · Pure Mechanics
Arcade driving that tests cornering execution over a small set of memorisable tracks.

Execution · Pure Mechanics
An arcade tennis game rewarding precise timing and reading human opponents.
Need for Speed II leans Execution (Pure Mechanics); Virtua Tennis 4 leans Execution (Pure Mechanics).
Virtua Tennis 4 leans a little harder on execution, though the gap is small.
Need for Speed II
Cornering and throttle control decide every race
Virtua Tennis 4
precise shot timing and positioning
Virtua Tennis 4 leans clearly harder on reads.
Need for Speed II
AI racers follow rubber-banded scripts, not minds
Virtua Tennis 4
human opponents can be out-predicted in rallies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Need for Speed II
Tracks are fixed; nothing meaningful is hidden
Virtua Tennis 4
minor ball-bounce randomness
Need for Speed II leans a little harder on optimization, though the gap is small.
Need for Speed II
Learning six tracks' racing lines and car choice
Virtua Tennis 4
minimal build depth, mostly play skill
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.