50% Tax rate for the super rich

Well this has caused a stir hasn't it. The Daily Tory was awash with its usual nonsense. Can anyone spot the problem with their logic

1) it won't raise any more money for the treasury because the super rich will find ways to avoid paying it
2) the super rich will be so upset at having to pay an extra 5% on their income over £150,000 that they will move to Afghanistan instead. They would rather live in a war zone than pay 5% more tax on income over £150,000.

Is that a camel over there?