I don't think the seats are that different, it's the use which is different. A quick picture from the web site of the Swedish National Society for Road Safety:
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you ever seen a child of that age rear-facing? Unfortunately the trend in Sweden is negative. We are more and more influenced by rest of the world. In 1998 71% of the children between 9 months and 3 years were rear-faced. 2003 this figure has dropped to 59%. Also the percentage of passenger seating decreased from 77% to 51%, this is probably more related to passenger side airbags, that were introduced very late in Sweden. For instance I don't think any or very few 9000 were sold with passenger side airbag over here.