Jayce damage a little too good?

I was laning vs Jayce and he was a good player always doing the long shot and if it hit he would then do a few range auto's then hammer in and I would be at 5% usually if everything went good for him, this was level 6 and beyond and I was tryndamere, now I max Q and W second so by that time I would have had level 2 W which when he goes to engage with his auto's after his long shot I would reduce his ad by 20, now he had 2 longswords and dorans so I was effectively cancelling out the longswords,He would wreck the shit out of me, I even ran with defensive masteries, now I don't know about you but I don't notice the difference between his -20 ad and not having -20 ad. Now I know for a fact there is a difference and I would prolly be dead if I didn't use it preemptively, not complaining my W is low because it is just fine at level 4 it's 80 AD,but isn't jayce damage a little too High just maybe?