0.45 vs 1.3 is mentioned as being almost irrelevant in the article - from article: “Another interesting observation is that it makes no difference what hardware you use to run it. If the solution is fast, it’ll be fast on a notebook as well as on a beefed-up workstation-class desktop. Sure, it might be twice or thrice slower, but it’ll be a difference between 10ms and 30ms.”

All up the article starts with reasonable discussion about how different solutions can have more than 6 orders of magnitude time difference, then it segues irrelevantly to a complaint about electron.