city does 0-100 in a maximum of 11 secs. not more than that whatever a man may do, provided he shifts like a good driver. 
Thats a fact. City pulls hard with an altis 1.6L even after 100kmh. Altis can merely run parallel to a city and can't leave city behind by any chance if it has an intial lead.
With the city driver doing rev matched shifting, altis has no chance.
i myself have tried it on my city.
P.S. ur belief isn't necessary at all. (H) just providing u with a fact that swift is slower than city. probably by a second or two, BUT slower. 