Until recently, both Burnley and Sheffield United were so dominant that there were fewer points for the rest of the table. We have also seen both us and (again until recently) WBA go on a real charge after terrible starts.
Sometimes it's worth watching mid-table Premier league matches from the 90s and early 0's. I reckon the top half of the championship is somewhere around that standard these days. Fitness, skill and consistency is miles above where it was when Robbo took over us.
I think the Championship has probably 10 really decent teams. Some under-performing (Norwich, Watford), some over-performing (Sunderland, Luton, Millwall, Coventry) and some playing at or near their peak (Burnley, us, WBA, Sheffield Utd).
The division is horribly skewed by parachute payments but it's still one of the most entertaining leagues in world football, if you ask me.