Tottenham are now on top of the table not because they got there by chance, but because they are really performing very well this season, they have a strong and well-coordinated teamwork on the pitch, so I have no doubt that the result of the match will be even a draw, it is an unqualified victory for Tottenham. Chelsea are not a big and loud team anymore, they are a mid-table team
Now the five teams in the top five Premier League standings are starting to look quite fierce after they have all played their tenth match. Now there are five teams whose points are quite close and not too far from the top of the standings, so this really shouldn't be considered a coincidence as you say for the Tottenham team because Tottenham really makes their players quite compact in every match. So Tottenham have never been defeated this season.