Really it should be JD vs Pies. At the end of the day the two sides are not comparable. Who knows how JD would have gone after Wayne moved on if they both stayed here and never left. I would believe the side would have been in a better position and likely JD would have taken over a much more game ready squad but the clubs progress in regards to the office side would be unchanged and likely even worse off.
I like JD he seems to be a good likeable bloke but he hasn't done anything yet. Essentially he is in the position Pies was at Souths. He has good players at a stable club with a decent office who seem to function well so his job is not the most difficult. I would like to see where he is at in three years to really rate him.
Kev on the other hand is at a club who from the back to the front is unstable and in a period of change. Kevs job is a lot harder than a lot would give him credit for. He will be in year three next year and that will be his defining year.