Isnt it stupid to put the exchange in the first place, especially in the rating of wallets !? Understand one thing, that when your money is stored on the exchange, it is not held by you, but by the owners of the exchange in your pocket, I think that you need to edit your topic and not mislead newcomers. Your rating had to start from bottom to top, then it would be correct.
It's no longer your money but the exchange property. There's nothing you can do if the exchange got hack or exchange declares bankruptcy you don't have any authorities to gain back you assets especially after the declarations has been made. It's your choice so make sure that you've learned a lot before taking your decisions or moving to exchange best to have your own storage to make it sure that you can secure your funds.