Are there successful Core losers out there?

I am re-posting one snippet from my other, longer thread, because I am
really curious about this while trying to decide what to do going
forward.

Basically, I find that journaling and calorie/point limits work and
diets without fixed limits don't work - at least for me. I realize
that dieting is not "one size fits all."

When I tried Weight Watchers Core for a while it didn't seem to work
at all. The diet doesn't make sense (to me anyway) because it is too
easy to take in too many calories even when following the rules
literally and not stuffing yourself. Want an avocado? Sure, it's a
vegetable so why not? Still hungry? Have another serving of fish or
chicken.

Core to me seem like Atkins with (1) more variety but (2) less
appetite control because you can eat all those insulin spiking foods
like bananas and corn and pineapple and so you never get your
cravings under control.

And when you reduce the trigger foods from Core you're almost back to
Atkins, with maybe less variety...

What I am curious about is this: Are there any really obese people
(like me) who have ever gotten to a normal BMI goal weight and kept it
off just following the Core plan? I am skeptical.

I know it is possible with Flex Points, but am skeptical about Core.

Thanks,

doug