I guess we'll agree to disagree on this one
I find the DSG excellent for braking and engine braking. On a high speed straight coming to a hairpin bend you can brake hard and flip the left paddle a few times for perfect down changes to get engine braking and never have to take your hands off the wheel. I find I can brake later as a result. In manual mode you are in control of the gear changes.
I don't find that...
As discussed many times, DSG will only change down when it's happy...so you hit the brakes hard and click, click, click...and it's not going to drop down as fast. Unless all the DSG car's I've driven have been broken.
Manual isn't manual...it's more manual that Auto - with an electronic babysitter.
At the end of the day, you buy what suits you. There's no right or wrong.
You buy whichever makes you most comfortable/confident/faster.