zer0synd1cate

I'm not sure if this is the right place to put this, but here goes. I got into a debate with someone claiming the GPU inside the new Xbox will be more powerful than a RTX 2080 Super, and I have literally no way to disprove them, or prove myself, because the only info I can find on the GPU inside the new Xbox is CUs and Teraflops. I have been in the PC gaming community for a while now, and the only time I have ever heard the term Teraflop and CU is in this debate, and maybe a video I saw a few years ago. I have no knowledge on Teraflops, and thus, no way to compare these two GPUs. Does anyone have an idea about this? Thanks in advance.