I've not quoted your full post, but that's much too simplistic for me. A previous poster used to suggest any game against a team above you is a free hit, but it never plays out that way as you don't beat every side below you. Without points against the Sky 6 we would have gone down in the Lopetegui year, and would have only got 31 points last, which relegates you most seasons.
The way both sides played yesterday isn't sustainable for either of their ambitions. If Chelsea played the top 3 like that they'd be the team losing 6-2, we'd have let a couple in against anyone including the promoted teams.