no. But then the wealthy's capital gains could come from gains in stock or a company, and those gains have already had company tax paid on them, e.g., if a company makes a profit of $100, they'd have to pay $21 in tax, and the company's equity gain is then $79. If you then charge a 35% tax on top of the $79, then that means you've taxed the $100 profit at 56%, which is a lot higher than the normal amount. So by reducing capital gains tax to 15%, you'd end up charging only 36% in total.
It makes sense.
However, why this doesn't apply to a bank's interest payment is beyond me. So may be it is rigged...