Tummy tuck post-op
You are likely very swollen. I would give it 4-6 months to settle down. You might need some liposuction after you heal to sculpt you a bit more. Good luck.
Tummy tuck shape
I agree that this is a gross overgemeralization. Of even more significance is that you just had surgery; you cannot judge the outcome during the preliminary healing! US surgeons may be more cautious about liposuction, which can compromise blood supply to the flaps, but that should not be categorized as a bad thing.
Gross generalizations have no place or validity
It is an unfair generalization to say that all plastic surgeons in the DR do a great job and all plastic surgeons in the USA do a poor job. You should have looked at the pictures of the surgeon that you were planning to use. If you didn't like their outcomes, then you should not have chosen them.