We can indeed see the strength of the teams that are ready to compete this season from the early matches. But it is still too early to classify these teams based on their performance in three matches.
The Premier League competition will still go on for a long time. We might see some changes in the standings at mid-season or even close to the end of the season that could be surprising. As long as the competition at the top of the standings is quite tight, all teams will still have a chance.
You are right that it is too early to predict the teams that will make it to the top four. But I can certainly state that Liverpool will be on the list. If you consider the quality of players and tactical prowess of the coaches in the EL, you would have to agree that the Reds is at the top. The attack of Liverpool will be a threat to the most formidable defence. These are mere speculations, nothing is certain.