User blog comment:BIA-Kaboose/The Problem Behind Balance/@comment-5605969-20131211161837/@comment-8267817-20131211183113

But you should at least see the point, some champions are simply not good, and it is because of an imbalance in the game, Jax, Kayle, Poppy, all of them do well because they buy mixed damage (or at least deal mixed damage) which makes them hard to itemize against, however Poppy for one reason or another is rarely played and considered unviable because her strengths are not obvious to most players. Granted in this example it is a champion being on the strong side instead of the weak.

The other side is champions like Shaco, they have their shining moments but they are short, and overall leave a gap in their team once their time to shine is gone. A good first 6 levels should not make a champion near useless from then on.