I happen to have DoA4 and I'm very good at it, but it took a fair bit of practice and a lot of frustration. You really have to know exactly when to attack, when to defend, HOW to defend. For example, to counter a move you have to anticipate exactly when they're going to do it and what segment of your body they're going to attack and whether it's going to be a punch or a kick.
You're also not allowed to hit the same place a few times in succession as they'll counter it, and you can't just block them because they'll throw you around like rag doll physics were still in style. The one truly, truly aggravating thing about the game though, is Alpha-152. The last opponent for most of the characters in story mode (still grin when I say this, I think they're playing fast and loose with the term "story"), she is quite possibly the most horrific thing I have ever known. I can hardly count the number of times I have tried to strangle myself with the wires of my wireless controller after getting the stuffing beaten out of me by her when I had her almost dead.
Anyway, I got good at DoA4 simply because it's the perfect game for me, you can just jump in and do a round or two at any time you feel like, and that's excellent for someone who these days only plays games when waiting for others to sort something out so I can continue working or when I'm brainstorming with the Gods and get bored of listening to them.
As most of you know, I'm super busy, so my free time comes in little spurts, and this kind of game is perfect for them. That's why I'm browbeating a friend into buying me Burnout: Revenge also. 
You're also not allowed to hit the same place a few times in succession as they'll counter it, and you can't just block them because they'll throw you around like rag doll physics were still in style. The one truly, truly aggravating thing about the game though, is Alpha-152. The last opponent for most of the characters in story mode (still grin when I say this, I think they're playing fast and loose with the term "story"), she is quite possibly the most horrific thing I have ever known. I can hardly count the number of times I have tried to strangle myself with the wires of my wireless controller after getting the stuffing beaten out of me by her when I had her almost dead.
Anyway, I got good at DoA4 simply because it's the perfect game for me, you can just jump in and do a round or two at any time you feel like, and that's excellent for someone who these days only plays games when waiting for others to sort something out so I can continue working or when I'm brainstorming with the Gods and get bored of listening to them.
As most of you know, I'm super busy, so my free time comes in little spurts, and this kind of game is perfect for them. That's why I'm browbeating a friend into buying me Burnout: Revenge also. 