Orianna vs Jayce Counter Pick

A 57.0% win rate reads well until the sample is checked: 107 games on patch 16.13.1 is a slim base, so the Easy rating describes a tendency rather than a settled matchup. The mechanics underneath are consistent enough to explain the direction it points in.

Jayce is listed at 125 attack range because Hammer Stance is melee; Mercury Cannon raises that reach on the swap, and Shock Blast fired through an Acceleration Gate is the combination that threatens Orianna beyond her 525. What he cannot do is hold an extended exchange. His 22 base armor and 30 base magic resist are thin, and his 590 base health is barely above her 565, so a full command sequence into her Clockwork Windup attacks is enough to end the trade.

The Ball also gives Orianna a defensive tool he has no reply to. Command: Protect attaches to an ally, shields them, and damages anything it passes through on the way, which strips most of the value from a Thundering Blow knockback and its follow-up. Command: Dissonance then slows through the Hextech Capacitor speed window he leans on after every swap. Jayce does hold more armor at level 18, 107 against 91.4, but his physical damage against her magic means the two build in opposite directions and neither purchase overlaps.