Link to concrete benchmarks or remove mentions

[alice-i-cecile]

What problem does this solve or what need does it fill?

Improve onboarding and initial impression for visitor of https://bevyengine.org/

What solution would you like?

"some benchmarks" at https://bevyengine.org/ link to said benchmarks - or even better an overview of performance compared to alternatives

Additional context

Migrated from https://github.com/bevyengine/bevy/issues/3622 for @matkoniecz

"some benchmarks" without anything specific or link to anything specific is not very impressive. Everyone knows that anything can win at some benchmark.

I would also note that starting from performance claims would have negative effects if performance will not turn out to be great in practice.

(is performance really primary strength of Bevy?)

[alice-i-cecile]

So, my personal opinion for this is that: a) cross-engine benchmarks are generally misleading b) beyond a certain point, productivity is much more important than performance (more productivity means more time can be spent optimizing) c) the benchmarks over at https://github.com/rust-gamedev/ecs_bench_suite (the referenced benchmarks) are both persistently outdated and pretty unfair

As a result, I'm in favor of removing the references to the benchmark completely. Your concerns about damning with faint praise are quite justified.