Sigurdsson and Spurs were on the wrong end of City's latest avalanche of goals as Manuel Pellegrini's men put the north London side to the sword by winning 5-1 at White Hart Lane in midweek.
City have scored the most goals this season (68) compared to the London duo's respective tallies of 47 and 43 and although both have better defensive records than City, the 2011/2012 Premier League champions have notched six against Arsenal, four against Manchester United and 11 across two matches with Spurs.
And Sigurdsson believes their swashbuckling attacking style will ensure they reclaim the league title this season.
“If I were to guess, I think City would be favourites for it,” he told the London Evening Standard.
“The other two clubs have fantastic squads and fantastic teams but I think with the experience and the players they’ve got, City will be the side who edge it out of those three.”
Despite the humbling to City, Spurs have been in good form under Tim Sherwood and Saturday's point at Hull further underlined the progress they have made as Paulinho's leveller saw them come from behind to secure a creditable draw.
Sigurdsson believes the squad is ready to fight on multiple fronts in the remainder of the season, with Spurs' quest for fourth spot the primary aim but a last-32 Europa League tie with Dnipro can see the club progress into the latter stages of the competition.
“We have the squad to cope,” he claimed.
“It was a big disappointment to go out to Basle last year and, hopefully, we can go a bit further this season. The squad are even stronger now than this time last year and the new players are starting to settle in.
“The return of injured players [Jan] Vertonghen, Sandro, Paulinho, Younes Kaboul and Andros Townsend] will make the squad even stronger."
Sigurdsson credited Sherwood for his part in the team's revival and is hoping the City match represents a mere blip on otherwise impressive recent form.
“Even though the City result was a setback, we’d done well in the games before that," he added.
“When a new manager comes in, it can freshen the place up, so it’s not surprising that we’ve been doing well [since the managerial change in December]. The staff are very good now so we just want to forget the City game and build on what went before.
“By the end of February, we’ll have a better idea of who will be at the top and who will be competing for fourth place.
“We need to make sure we go on another run and hopefully that will ensure we’re in the top four at the end of the season.”
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