QUSD is an alternative to other "stablecoins."
QUSD is different, it is a retargeting Low-Volatility-Coin.
The concept is slightly different than a "stablecoin."
And why should we buy your tokens and invest in your project if you are no better than competitors? For you, the most important thing is liquidity and a large selection of exchanges, and your project does not have all this.
You can learn more about the differences between the existing stable coins. I think the principle is the same. Now there are many stable coins but only usdt is used.