You know what's funny?
You build one MR item, and you take much less damage. I'd actually believe that tooltip.
You build five armor items, and the tooltip says you take 78% less damage minus another 12% from Ninja Tabi... and you're still being autod for 400-600 twice a second, and you die within a second or two to any AD champ -- even champs that don't build any AD at all, like Yi, but still somehow miraculously one shot squishies and melt tanks like they're not even building armor. I don't think that tooltip actually tells the truth.
I find that just a bit funny.
