How exactly is blitzcrank balanced?

How do people think that blitzcrank is balanced? The only reason I get is because "you can dodge his q." Yea, you can dodge every skillshot, that apparently means every champion with skillshots is bad. He will eventually hit you, but instead of just taking damage, you just die instantly. Also you can't "stay behind minions" when the enemy team is seiging and they cleared your entire wave. IMO his q needs to either travel slower or have a smaller hitbox. Someone like morganna or thresh, they just blow a qss or cleanse if they hit you, blitz, he has basically no counterplay at all. The only weakness I see is somewhat weak without his q, even then he still has an aoe silence that does a good amount of damage and a point and click knockup. I liked the w change to emphasize his strength and have clear weaknesses, but his q still doesn't fit that well enough as there is basically no risk and extremely high reward.