Phoronix benchmarks DF 3.2 vs Ubuntu - question

[elekktretterr at exemail.com.au]

Hi,

I just read an article on phoronix. Someone benchmarked DF 3.2 against
Ubuntu, and while DF is very competitive in all benchmarks, it's not in
this particular one: Himeno Benchmark(Poisson pressure solver).

http://www.phoronix.com/scan.php?page=article&item=dragonfly_linux_32&num=3

What could be happening here?