head to head
Mario Kart 8 asks more than Looney Tunes Racing, and the gap is variance.

Execution · Twitch Chaos
Item-heavy kart racing testing track knowledge against ACME-flavoured randomness.

Execution · Twitch Chaos
A kart racer where controlled chaos from random items tempers otherwise precise driving skill.
Looney Tunes Racing leans Execution (Twitch Chaos); Mario Kart 8 leans Execution (Twitch Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Looney Tunes Racing
Cornering and boost timing carry the racing
Mario Kart 8
precise drifting and item timing matter
Looney Tunes Racing leans a little harder on reads, though the gap is small.
Looney Tunes Racing
Mild item mindgames against human players
Mario Kart 8
minimal, mostly reacting not predicting
Mario Kart 8 leans clearly harder on variance.
Looney Tunes Racing
ACME item rolls randomise each race's chaos
Mario Kart 8
item boxes are heavily randomized
Mario Kart 8 leans a little harder on optimization, though the gap is small.
Looney Tunes Racing
Track memorisation and shortcut routing pay off
Mario Kart 8
track lines and item strategy solvable
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.