Maurizio Sarri says Chelsea would not tolerate four years without a trophy like Tottenham have under Mauricio Pochettino.
Sarri and Pochettino have attracted plaudits despite not having won any silverware as managers.
Sarri admits Chelsea's history suggests he must end his drought to remain as boss.
Asked if he would be afforded four years at Chelsea without a trophy, Sarri said: "I don't think so, but I don't know. It's up to the club."
Sarri takes his Blues to Spurs' temporary Wembley home this evening seeking to extend a 12-match unbeaten start.
The cost of building Tottenham's new 62,000-seater stadium at White Hart Lane and the uncertainty over when they will play there may have contributed to Pochettino being unable to end Spurs' 10-year wait for a trophy.
Pochettino signed a contract extension until 2023 last summer and Sarri has sympathy with his lack of silverware. "I want to win something just to avoid this question," the Italian added.
"Sometimes there are the conditions for winning. Sometimes not.
"It's clear he's a very important coach, with a trophy or without a trophy." Antonio Conte, Sarri's predecessor, was sacked in July despite winning the Premier League and FA Cup in two seasons.
Sarri, asked which Spurs player he would he could sign, was happy to declare his appreciation of Christian Eriksen.
But when the subject of the Denmark player's contract expiring came up, Sarri interjected: "I like him very much, but I don't want to talk about a Tottenham player for the transfer market, of course. I only answered a question."
Sarri insists Liverpool are the only side likely to challenge Manchester City with Chelsea just battling it out for Champions League qualification.
Pochettino, meanwhile,hopes Tottenham will be in their new stadium in January or February.
Spurs' move to their new ground missed its August and September deadlines due to contractors missing deadlines and critical alarm system failures and last month the club announced that they would stay at Wembley until at least the end of 2018. The club are still unsure when they might get the go-ahead to return to the White Hart Lane site and have yet to announce any test dates, with an update expected at the beginning of December.
Pochettino, who visited the stadium on Wednesday, is praying to move in by early 2019.
He said: "We were there checking the facilities, the changing rooms and everything. We are so excited, we cannot wait to move there. We understand that it is a fantastic project for the future of the club.
"We are so disappointed because we expect to play there in 2018 but that is not going to be possible. We hope that in January or February we can move there. It will be a massive boost."
Pochettino added that he was not surprised by Chelsea's excellent form, saying: "I am not surprised by their start because Chelsea have an unbelievable squad and players.
''This summer they invested. They signed quality players and they have one point more than us. It has not surprised me that they're doing very well."