The horsepower is a parameter that majority of car fans pay the biggest attention to. In this comparison, it is the Honda City IV 1.3 95HP manual which has by 8 horsepower more in comparison to the Alfa Romeo, which makes this car slightly faster. With more horsepower the Honda should also give somewhat more flexiblility in specific gears.
The difference at the level of 395 mm between selected vehicles is quite relevant. For a city cruseing where such a things as maneuverability and ease of parking play a role, probably the Alfa Romeo Giulia 1.3 Super 87HP is more suitable for you. However, the Honda is characterized by a better comfort, more spacious cabin and firmer handling when driving fast in steep curves.
The Honda City IV has 416 mm longer wheelbase when compared to Alfa Romeo Giulia. As a result the Honda City IV 1.3 95HP manual is more safe and has a better stability. Moreover, longer wheelbase has impact on convenient and more comfortable driving.
The Honda is 747 millimeters longer than the Alfa Romeo Giulia. The length of the car is important in terms of travelling comfort and room in the boot. The Honda probably will be offering to it's passangers more space for legs. Aditionally the Honda will be better driven but the Alfa Romeo Giulia will be a slightly easier for parking due to shorter length of the body.
The higher a vehicle is, the the more convenient is a boarding it and greater capacity of loading big amount of thinks to it. The difference at the level of 176 mm in favor of the Honda City IV is small and should not be really noticeable.