Talk:Last Whisper/@comment-20804982-20130918030321

Because of the way armor is calculated, and because most champions have ~80 armor naturally at lvl 18, LW actually ends up giving nearly a flat damage boost against nearly everyone (the damage increase drops off a few hundred armor).

It is a little strange, but LW currently is slightly LESS effective against huge armor stacking tanks than it is against lvl 18 chars with no armor items. This seems counter-intutitive, but has entirely to do with the way that Riot calculates armor (each additional point of armor is less effective than the last). It is easy to do the math in excel - look at the armor page in the wiki to see how it is calculated.