"Vayne decimates tanks and does high damage to everyone? Nerf Vayne!"
Veigar decimates mages and does high damage to everyone?
"lol buy mr"
"lol don't pick mages into veigar"
...
"hey guys why doesn't riot take our word for gospel? xd"
because you guys pick and choose when your generic counter-strategies apply to champions even though "buy x resistance item" and "don't do the thing that the enemy wants you to do" applies to every champion regardless of how balanced they are
Does True damage scaling with %Max hp that can't be itemized against, stealth, mobility, two fucking safety nets, and kills anyone like they have no armor at all.
Has a stun that can be Cleansed off, no mobility, a skill shot, a delayed aoe nuke that is easy to move out of, and a nuke that you can counter with 
or 
