20 out of 24 are British/Irish. Stands to reason that they are more likely to get promoted, if we're being incredibly lazy and ignoring everything from club size/budget/spending power/parachute payments/injuries/etc.
Bizarre and biased comparisons.
Aside from that, Pearson, Dyche and McClaren have never been promoted from this league, so I am not sure why they are included.
Mick McCarthy has two promotions in 10 seasons at this level. Billy Davies has one promotion in 10 seasons at this level.
Harry...