Complex sentence: Sweden won 15 medals in total, making the Sochi games Sweden's most successful Winter Games ever in terms of medals, although the number of gold medals (2) was fewer than it achieved in 2006 (7) and 2010 (5).
Split into simpler sentences: Sweden won 15 medals in total, making the Sochi games Sweden's most successful Winter Games ever in terms of medals. However, the number of gold medals (2) was fewer than it achieved in 2006 (7) and 2010 (5).