60% per Annum is unrealistic, if you want to be honest, even the big exchange with huge liquidity like binance can not give such an offer on stablecoin staking and still remain in business.
It will be better to be transparent and give a realistic % reward so that users are aware of what they are getting rather than giving false hope.
Because the binance exchange does not trade with this money. They only provide a loan - this is an analogue of a bank. Therefore, the percentages are scanty, your comparison is not relevant.