Hi, linking this post: Stream Rules for Routing vs. Routing via Pipeline (Rule). Sadly no one answered it…
As far as I know there’s no tool to measure which way of doing things is faster, the only thing that comes to mind is comparing which approach puts the least amount of strain on your server (comparing RAM, CPU usage).
As always the best approach is to have the least amount of operations being done per message but sometimes this is just not possible, as to whether pipelines are faster than stream rules? - I think it’s comparable, like I said, comparing load is the only thing you can do.