What malthanis said,
Some people have to calm down a bit and wait for time to pass. You can all assume what you want, yet we have another (possible month and a half) to go until the ultimate release. And if it turns out that you're class is utterly useless; changes will be made
played a ret myself over Wrath and Early Cata and tbh, rets right now are fine. If played right (yes it's different as before) you can pull some crazy out of control numbers, same as every other class. It's a new expansion, don't be frightened, and seriously, don't go crazy over somethings thats most likely temporary. Look at how they changed your class in the previous builds. Time for some to see the big picture. It's not because this build gives you a 15% decrease that the fictional 40% buff you had 5 builds ago is nullified. No, you're getting a 40% buff on an ability, Which would be at 140% (lets assume this) Take the build now, oh 15% off, well still a 25% increase over what it was.
Hold your horses until the last and final patchnotes are there, if you don't like it, go do some mathematics and see how well rets are actually doing
besides, parses don't tell you nothing. Have a look at boomkins, parses say you're screwed, yet they have proven to be most powerful when played correctly over the last 3 patches.
Be optimistic, see the big picture, relax