One thing we have to realize is Chelsea today is not the Chelsea of a few seasons ago its performance is more stable and able to cope with pressure that's why Chelsea can take the champions league ticket for next season. Real Betis are also in best performance but if compared to Chelsea of course we know the answer Chelsea have the advantage over them I mean in every way Chelsea deserve to be champions. Previously I bet on this match for Chelsea to win also over goals, I was a bit worried when 60 minutes only one goal but in the end total 5 goals.
Maybe you are drawing conclusions too early? 4th place in the Premier League and 69 points for the season is an extremely average indicator to think that Chelsea is back. Next season they may fight for the title (unlikely) but most likely they will be happy to get into the Champions League zone again and take some cup (any haha). It seems to me that we can only seriously remember Chelsea when they start fighting for the title. Everything else is fluctuations - many teams sometimes take off for a season or two.