The title is a response to another blog series called "Exploring Kotlin’s hidden costs". He is benchmarking the claims in those blog posts. Title Gore, perhaps. But not clickbait in this case.
Re:Kotlin's hidden costs – Benchmarks
by chairmanwow on Tuesday July 04, 2017 @08:54PM
(#14699297)
I felt similarly disenthused to realize the very small number of cases where Kotlin is slower.
It's the same.
Unless you care about a particular use case, when it isn't.
Measure, profile, refactor....