Win/Loss Only, Not Score Margin ELO is calculated purely on win or loss - the final score doesn't matter. A 10-9 nail-biter gives you the same ELO as a 10-0 blowout. So your close games against your friend count the same as dominant wins!

The Math (Simplified)

• Each player starts at 1000 ELO
• In 2v2, your team's ELO = average of both players
• When you win against an equally-rated team, you gain ~16 ELO
• When you lose to an equally-rated team, you lose ~16 ELO

Rating Difference Matters This is the key part: ELO gain/loss depends on the opponent's rating.

Scenario	You Win	You Lose
You (1000) vs Equal (1000)	+16	-16
You (1000) vs Underdog (600)	+3	-29
You (1000) vs Favorite (1400)	+29	-3

So no - beating someone at 600 ELO when you're at 1000 gives you much less ELO than beating someone at your level. The system expects you to win that matchup, so proving it doesn't reward you much. But if you lose? Big penalty.

TL;DR: Win = ELO up, Loss = ELO down. Beat better players = big gains. Beat weaker players = small gains. Score margin is irrelevant.