This is exactly why the benchmarks include
1) a way to repeat the benchmarks as described in the article see page 4 - 'phoronix-test-suite benchmark 1507285-BE-POWERLOW159'.
2) The compiler options are included
Armed with those two pieces of information, you can go and "prove" that the benchmark is, as you called it - bullshit. Although rarely, if ever that I am aware of, does anyone respond to an article with those two pieces of information and say - "here, if you run it in this mode, you will see a marked difference in performance".
As Bert64 says in the response to the grandparent, 99% of end users will be running the software - either pre-compiled by their distribution vendor in this way, or compiled by the benchmark author's defaults. If you really want to prove that the benchmark is crap, then by all means make meaningful suggestions to _any_ of the existing machine benchmarks.
Michael (Phoronix) and I had some interesting discussions with Sun (pre Oracle) about 64 vs 32. They argued that the benchmarks were misleading because they did not use the Sun Studio (IIRC) compiler for 64 bit. In the discussions, it became clear to even the Sun people that it was quite difficult for even the Sun people to configure and use the platform in the way they wanted Phoronix to. Out of the box, gcc compiling for 32 bit - was how they configured the systems. And guess what, the './configure;make;make install' triplet would compile the same way we did.
Full disclosure, I have a long history with Phoronix, and have been involved in work that they have done in the past.