Different DG's have varying degrees of effectiveness on different maps to the extent that some pantheon games, with equal skilled players, become a rock scissors paper match.
For example, qot on prison is downright brutal. the shield during the early levels on both of your DG's will allow you to dominate the map till lvl 10, which will win you the game almost every time. whereas rook on prison is at a severe disadvantage as there is a dearth of buildings.
Tower rook on cataract is ridiculously good. they also do very well in crucible.
minion erubus vs oak on any map is usually a gg in the favor of erubus.
any other matchups you guys could share or comment on? Lets turn this thread into a strategy, counter strategy, and what to do if you know y oure hopelessly outmatched based on what you see your opponent doing vs what DG you have.