Already proven that the rear drum breaks is sufficient for a car this weight and size. Can go to Paultan.org and see comparison.
On the other hand, the City beats VIOS in every category:
1) Safety - VSA
2) Fuel Consumption
3) Power and performance
4) Response.
5) 5 years warranty
6) 6 months service interval (VIOS still 3 months? Not too sure on this)