39 people in guantanamo. Estimation of 1.8m in China's ethnic detention camps.

There is no comparison.

Edit: Here's the website on the tribunal, including detailed torture methods, video evidence, witness testimonies of death occurring and a 39 page summary.

https://uyghurtribunal.com/

Edit 2: Man I am loving these responses that provide 0 counter evidence and 0 sources, just claiming it was funded by groups but was Not funded and 100% voluntary that Countries participated in providing satellite imagery & witness testimony.

Chinese officials were invited to provide evidence that these were false, they refused to participate, Countries have now placed Sanctions on Chinese companies that were proven to use slave Labor.