The horsepower of the Lada 2105 is 10 hp bigger in comparison to the Mazda 323 III. Because the difference is not big this should not affect the vehicles performance in a noticeable way.
The Lada 2105 2105 Sedan 1.3 64HP manual has 1 percent longer wheelbase than Mazda. Therefore the Lada 2105 2105 Sedan 1.3 64HP manual is more safe and has a better stability. Besides, longer wheelbase affects convenient and more comfortable driving.
The Lada 2105 is 3 % longer than the Mazda 323 III Hatchback 1.1 54HP. The length of the car is significant in terms of travelling comfort and room in the boot. The Lada 2105 2105 Sedan 1.3 64HP manual very likely will be offering to it's passangers more room for legs. At the same time the Lada 2105 2105 Sedan will be better driven ,however, the Mazda 323 III Hatchback will be a slightly easier for parking due to shorter length .
Number of doors
The 3-door model of Mazda is easy to insert baggage into a boot, whereas four-door Lada 2105 2105 Sedan offers more convenient getting into the vehicle, reduced cabin noise at the expense of smaller trunk lid.
The higher a car is, the the more convenient is a getting in to it and greater capacity of loading big amount of stuff to it. The difference that amounts to 46 mm to the advantage of the Lada is insignificant and should not be really noticeable.