well if you want to argue you better put a link of the source, so we know what we are looking at. For what i know this is comparing performance to another GPU as baseline, so f.e.
4070 is 100% faster than 2080ti,
6950xt is 119% faster than 2080ti
In the same test, that doesnt mean that 4070 is 19% slower than a 6950xt.
You just have to understand the purpose of this database, and how its done.
I think it even compares to a way slower card, iirc.
So its you, not understanding this chart.. that makes you believe that a 6950xt is 20% faster than a 4070. When its absolutely not.