Prioritize lane pressure by controlling spacing with (Q) sweet spots and punishing Gwen when she tries to last-hit inside your threat range.
This is a snowball vs scale matchup; deny Gwen's calm scaling by forcing extended trades before her item spikes.
Trading pattern
Trade by landing repeated (Q) sweet spots, using (E) to adjust spacing, and extending trades only when (W) can trap Gwen or (R) is active.
Punish Gwen's commitment when her (W) is down or after she wastes it, as she becomes vulnerable to your sustained damage.
Avoid throwing all (Q) casts early if Gwen can disengage cleanly; wait for windows where she cannot exit your (W) zone.
Danger windows
Beware of (R) slow and multi-cast needles during extended fights where she can chase and outdamage you.
Respect (W) untargetable zone which blocks your retaliation spells and can negate your all-in threat.
Avoid extended trades when your (Q) and (E) are on cooldown or after missing key (Q) sweet spots, as Gwen can exploit your reduced threat.
Early game
Use early waves to establish control near your side and fish for (Q1) to force Gwen into unfavorable last-hit positions.
Avoid short trades after missing (Q1) or when (E) is down to prevent Gwen from stacking her (Q).
Prepare to use (R) at level 6 to extend fights and punish Gwen's lower early burst.
Power spikes
At level 6, activate (R) to gain healing amplification and chase potential; use it to convert trades into kills or force recalls.
First fighter item spike increases your damage and durability, enabling you to pressure Gwen through longer trades.
Respect Gwen's level 6 (R) spike where she gains slow and chase; avoid extended fights inside her (W) zone during this time.
Win conditions
Use wave control to keep Gwen pressured near your side and force her to last-hit inside your (Q) range.
Exploit windows when (W) is down to trap her with (W) and land multiple (Q) sweet spots for sustained damage.
Leverage your level 6 (R) and first fighter item power spikes to force extended fights, snowball kills, and apply side-lane pressure to deny Gwen her scaling.
Tip: For Aatrox vs Gwen, read overview, trading pattern, and danger windows first for a fast Top lane check.