^^^ The use of 'average' in that reference to Council Tax is also misleading.
Quote:
"The average council tax per dwelling in a Labour council area is £1042.31, versus £1,378.45 in Tory council areas"
Labour-controlled areas are likely to have lots of generally relatively poor people living in terraced houses, small flats and other properties with 'Band A' Council Tax. Tory-controlled areas are more likely to have higher numbers of larger properties, in bands G and H, which will generally be occupied by relatively affluent people.
So all those 'averages' really show is that well-off people tend to pay higher Council Tax then poorer people do - which is exactly what Labour are campaigning for anyway!