That's like one posting a bad argument on here, another saying it's a bad argument, then the first saying it's not a bad argument because the second hasn't supplied a better argument to replace the first's argument.

Nobody has to accept this benchmark as indicative of anything if they don't find it robust enough.

The burden of proof is always on the one making the claim, not on the one refuting it. See Russell's Teapot, et al.