

Vex vs Jayce Counter Pick
Matchup Summary
What the Data Means
123 games is the thinnest evidence a matchup can rest on, so the 58.5% Vex records against Jayce on patch 16.13.1 deserves to be read as a lean rather than a verdict.
The theory behind it holds up. Jayce is a stance champion: Mercury Cannon / Mercury Hammer swaps his form for new abilities and increased range, while Hextech Capacitor grants movement speed on every swap. His listed base attack range of 125 belongs to the hammer, and the whole skill expression is choosing which form to be in at a difficulty rating of 7. Acceleration Gate hands his side movement speed on top of that. Vex is built to tax commitment: Personal Space shields and damages, Looming Darkness slows through Gloom, Doom ‘n Gloom fears.
Damage type keeps the fight readable. Jayce deals physical damage, so armor rather than magic resist is the correct defensive purchase here, and his 22 base armor is the softest defensive stat on either sheet. Health is nearly identical at 590 apiece, though he scales to 2,443 by level 18 against 2,358, and both move at 335. Thundering Blow knocking her backwards is his cleanest answer to Shadow Surge, which otherwise marks a target and dashes in to finish it. Both spend mana, and his 59 base attack damage against 54 makes an early exchange in cannon form genuinely threatening.
FAQ
Yes — Vex holds the statistical advantage in this matchup. Vex wins 58.5% of the recorded games.
58.5% from Vex's perspective, measured on patch 16.13.1.
123 ranked games at Emerald rank and above, across all regions.
The current Vex build — items, runes and skill order from the same data set — is on the Vex build page.