The north London out currently lie in second place in the standings, level on points with top-placed Arsenal having scored five and conceded just once in their opening five league games.
Tottenham face cross-city rivals Chelsea on Saturday, and Vertonghen believes his side's efficient performances this season have not gone unnoticed.
|8/1||Tottenham are 8/1 with Coral to beat Chelsea 1-0 on Saturday
"We lost to a direct opponent the other week against Arsenal and we want to do better this time. Last year we lost at home [against Chelsea] because of quite a lot of injuries in my opinion. We want to do better this year."
Spurs rounded off a run of three games in six days with a convincing 4-0 win over Aston Villa in the Capital One Cup, and Vertonghen believes the strength in depth at the club will be key to their success this season.
"I have never played two games in three days," he added. "It was quite a test and I am very tired at the moment.
"We can be happy. Last year we were kicked out of this tournament [the Capital One Cup] in the second round and we wanted to better that this year.
"It is tough but we already need everybody. We have five or six people who are injured and couldn't play.
"Some players didn't even travel and quite a lot of them will play on Saturday. I think we needed this big squad, for sure."