Tank items top lane?

Can someone pls explain to me why "tanks" like sion, ornn, maokai, cho gat with tank items do more dmg than an ad bruiser top that are mesnt to do damage? Can understand that logic. I can be 2/0 top for an example, and when the tank like sion gets sunfire cape he manage to out damage a top laner with damage items. Can someone explain this?
Report as:
Offensive Spam Harassment Incorrect Board