The Blues boss feels Manuel Pellegrini must deliver silverware given the strength of his squad, while voicing doubts over how stringently the FFP regulations are being enforced.
Last season's runners-up splashed nearly 100 million pounds (120 million euros) on five new players despite the introduction of the new Financial Fair Play (FFP) regulations, and the Portuguese feels that such an extravagant outlay marks Manuel Mellegrini's men out as the obvious title favorites for 2013-14.
"The team with more responsibilities to win the title, because their squad is quite unique, is Manchester City," Mourinho told reporters. "I mean the quality and profile of the players, the experience of the players, and the average age - they don't have old players or very young players. You see all of them, players with big maturity and experience: [Sergio] Aguero, [Edin] Dzeko, [Alvaro] Negredo, even [Stevan] Jovetic.
"These are their four strikers, but go through the positions and you see [Yaya] Toure, Fernandinho ... nobody more than 30, nobody below 23. The squad is amazing. They have solutions and solutions and solutions. If you ask me which team has more ammunition, I have to be honest. I have to apologize to the other four in case they're not happy with what I say, but City are the team with more ammunition. They are a team able to make a run of victories."
Chelsea, in comparison, spent around 65 million pounds (78 million euros) in the summer, and Mourinho feels the FFP rules have made an impact in the transfer market already.
However, he has some doubts over whether the regulations will be stringently enforced upon the likes of City, who have continued to buy freely.
"I hope Financial Fair Play is for everybody and not just for some because we care about Financial Fair Play," he said. "We look at it, we respect it, we prepare ourselves for the future based on Financial Fair Play coming into action. I hope it applies to everybody. We are worried about the spending. We have a board, we have an economic department working hand in hand with the sports department, and we want to respect it.
"We know our owner is a special person in the economic world and has incredible potential to show his passion for this club and for football, but Financial Fair Play has an objective to control the differences between owners and clubs. January is a period where we will see whether it is or is not [being implemented]."