In the old days you would choose easy, medium, or hard setting. DDA is like an automatic version of that instead of manual. That's not a setting you would normally choose in a head to head type of game, but it's possible they overlooked that.
Would it matter in h2h? I'm not certain. If you are playing well you are winning games and losing DDA help. If you are playing poorly and losing games you are gaining more DDA. It sure seems like matchmaking is by division (AM2 seems much more difficult than the one above it when I'm in it). If so then you should have roughly the same DDA (you lost a lot and get lots of DDA help, or you won alot and don't, or somewhere in between). In fact, your record, division, and DDA help would go hand in hand.
So even if there is DDA, the only way it would really impact anyone is if a player with a good record matched against a player with an awful one. In this sense you'd have the a.i. each person normally plays and the difference would be the actual skill levels of the players themselves and how they match up. And in this sense the better player should still win most of the time.
In the old days you would choose easy, medium, or hard setting. DDA is like an automatic version of that instead of manual. That's not a setting you would normally choose in a head to head type of game, but it's possible they overlooked that.
Would it matter in h2h? I'm not certain. If you are playing well you are winning games and losing DDA help. If you are playing poorly and losing games you are gaining more DDA. It sure seems like matchmaking is by division (AM2 seems much more difficult than the one above it when I'm in it). If so then you should have roughly the same DDA (you lost a lot and get lots of DDA help, or you won alot and don't, or somewhere in between). In fact, your record, division, and DDA help would go hand in hand.
So even if there is DDA, the only way it would really impact anyone is if a player with a good record matched against a player with an awful one. In this sense you'd have the a.i. each person normally plays and the difference would be the actual skill levels of the players themselves and how they match up. And in this sense the better player should still win most of the time.