Vayne Silver Bolts Buff

Okay, so Vayne's silver bolts is changing from 20/30/40/50/60+4/5/6/7/8% To 6/7.5/9/10.5/12% Now, I thought: that's good - make her more focussed on killing tanks but weaker against squishy targets. But then I did the math.

At level 1, Anivia has 467.6 HP. That means Silver Bolts does 28 damage, from 38.7. So far so good. But at level 18, Anivia has 1657.6 HP. So Silver Bolts does 198.9 damage, from 192.6. So Silver Bolts, late game, does more damage to the squishiest champion in the game even if she doesn't build any health whatsoever. Now, if we account for the 23.2 loss of base AD at level 18, Orianna has 68 armour, so that's a change of -41 damage over 3 attacks. So it's not a buff in every situation.

But that's not accounting for the fact that it's even more useless to try and itemize against Vayne than it was before, and the fact that someone who gets 3000 health is taking 60 more true damage every 3 attacks. If someone builds 4500, a not unrealistic number for someone going full tank, that's 120 more true damage every 3 attacks.

So Vayne becomes even more overbearing against tanks without really getting nerfed against squishy targets. But in order to shift her from "shreds anyone" to "shreds tanks but isn't the best against squishy targets" you actually need to nerf her against squishy targets. Is it too much to ask to bring the Silver Bolts damage down by 0.5%-1%? That would make her deal slightly less to Anivia at level 18 with no health items than on live, but she'll still deal considerably more against tanky targets.