Championship defences leak goals. Wolves won the title concdeing 52 goals, Burnley conceded 60 in 5th place and Preston 54. Watford, comfortably in mid-table managed to concede an impressive 72! Compare that to the top teams in the EPL (Man U conceded 24, Liverpool 27, Chelsea 24) and you can see why the promoted teams often struggle.
If you are a striker in that league, you are going to get plenty of chances.