It's a fact based on the league table. In the same way Liverpool are worse than last season. Fact. Sheffield United are worse than last season. Fact. Villa are better. Fact. A three kilo turbot is bigger than a one kilo turbot. Fact. Because the way you decide that is to use a measure. A Ferrari is faster than a Dacia Duster because it would beat it in a race.
Monty Python is funnier than Fawlty Towers? That's an opinion
If you are only interested in scoreboards and league tables its indeed a fact, if you are interested in football its not a fact.