head to head
FIFA 99 asks more than Roblox, and the gap is execution.

Execution · Competitive PvP
Late-90s arcade football execution with couch-versus prediction and bouncy luck.

Execution · Practiced Mastery
A platform of millions of user-created multiplayer games spanning every genre, played mostly by younger audiences.
FIFA 99 leans Execution (Competitive PvP); Roblox leans Execution (Practiced Mastery).
FIFA 99 leans clearly harder on execution.
FIFA 99
Quick passing and shot timing in arcade-leaning football
Roblox
Many popular experiences are obby/PvP tests of hands
FIFA 99 leans a little harder on reads, though the gap is small.
FIFA 99
Couch opponents can be conditioned and baited
Roblox
Multiplayer experiences pit you against other kids' minds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA 99
Era physics produce regular fluke goals
Roblox
User-generated content means constant unknown systems
Roblox leans a little harder on optimization, though the gap is small.
FIFA 99
Simple formations and known exploit angles map fast
Roblox
Grind economies and trading reward system mastery
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.