React is far greater than 2x as slow on some metrics, like boot time, but the newer versions actually aren’t as bad as the pre-fiber versions that those benchmarks are based on for DOM updates. For boot up time React is still about 5x worse than Mithril, but on create & update benchmarks they’re now at least in the same ballpark.

https://krausest.github.io/js-framework-benchmark/current.ht...