There aren't many well-rated all season tyres on the market, which makes the AS210 quite unique as it was recommended in all tests it was featured in. It could be better on snow but other than that, it's a very good tire.
To do a good allseason tyre on a budget is difficult and Multiseason 2 is the proof of this. It's really good on snow, but lacks some of the wet safety that the premium models have.
175/70 R13 doesn't belong to the most popular dimensions for allround tyres - there are 11 tyre models available, which can be compared to 170/80 R15, 165/70 R13, 325/30 R21. Let's break down the sizing - 70 is height of the tyre, which is calculated as 70% of the tyre width (175mm), which means the sidewall height has 122.5 mm. The wheel diameter is R13, which means it fits to a 13 inch/330.2mm diameter wheel. The total circumference of the tyre is 1807.04 mm, which is very similar to 195/50 R15(1809.56 mm), 175/55 R15(1801.7 mm), 160/60 R15(1800.13 mm), 185/60 R14(1814.58 mm), 155/80 R13(1816.47 mm), 215/40 R16(1817.1 mm), 165/60 R15(1818.98 mm). There are multiple speed indexes available for allround tyres in 175/70 R13: T(190km/h). The same goes for weight indexes: 82, 86. You can find 175/70 R13 on 27 car models - mainly Hyundai, Kia, Seat, Daewoo, Ford.