Which is better, Pinduoduo or Tmall?

I used to think tmall was good. Since Tmall was cheated of 200 yuan, and Tmall Xiaoer was in cahoots with swindlers, and there was no way to complain, I thought Pinduoduo was good. Tmall has no bad reviews, and others can't see it if it hits a star. Tmall Xiaoer can also delete bad reviews at any time at the request of merchants. Pinduoduo has bad reviews and will not delete them at will. Tmall dare not face bad reviews. In short, any shopping platform is better than Tmall.