^^^^ I didn't watch it (the video, again), but it's been posted before. With no reflection on any of the battery powered saws, all Stihls and their chains are not created equal.... Two can look virtually identical and be on totally different levels in terms of their performance. Just my .02 and a big ol' "grain of salt"..... some Stihls (and particularly the chains they sell to homeowners) are like dull butter knives compared to their razor cutting beasts imo.
Just remember.... you read this on the Internet too
Know what you are comparing .... That is all.