you mean the unlimited tests, where iphone 8 won both?
https://www.futuremark.com/hardware/mobile/Apple+iPhone+8/review
https://www.futuremark.com/hardware/mobile/Samsung+Galaxy+S8+(MSM8998)/review
So again, the S8+ doesn't even have a fully qualified win over the iPhone 7, released a year ago, as it loses to everything on 7 aside from highly-artificial multi-threaded tests where its 8-cores beat 7's 4 cores through pure brute strength.
Which has literally been the same story every year since the iPhone 5s. The FOLLOWING Android/Samsung release only beats the PREVIOUS iPhone release on extreme multi-threading or artificial physics tests, while that previous iPhone beats the year-later Android on everything else (single-core, real world multi-threaded performance, IPS, etc)
This narrative that they "trade blows" every year is flat out wrong, and has been since the iPhone 5s. Android will often win against the year-prior-iPhone on highly threaded benchmarks, and the year-before-iPhone will win on literally every other performance benchmark. Then the new iPhone comes out (same year as Samsung) and beats it on highly threaded benchmarks, and everything else, etc. THAT cycle repeats.. but iPhone is certainly not the one playing "keep up" there.