Is it? I find a lot of these performance views are very subjective depending on multitasking, hardware, gpu, extensions, etc. Chrome has always served me well, and the built-in sync and consistency on mac + windows is what I like best. I would rather compete on features and general standards compliance, and then let people choose their own experience on top.
When everything else runs silky smooth, using vanilla Chrome on vanilla macOS feels like a giant slug. For something so fundamental, I find it baffling Google is unable to do it properly.