The problem is that it takes effort to make good comparative benchmarks — for a platform you're not totally immersed in, you'd ideally speak with the community about your methods. Furthermore, good benchmarks require real investigation explaining the differences; otherwise you could be measuring something silly. And you should graph some of the stats by time.

Maybe in an ideal world, quality benchmarks would be commonplace. But in this world, doing good benchmarks in response to everyone's bad benchmarks is a heavy burden.