Maybe those two versions mean the same thing in whatever idea vector space ChatGPT operates in, but ChatGPT's version is missing a lot. It didn't keep your "half the time, more than half the energy" bit, which I liked.
The former's informal and my default commenting voice. The latter is suitable for more uses.
I can pull it towards whatever voice and style I want.
> I ain't half bad at writing and talkin' to folks.
> I can whip up a decent couple of paragraphs from a list, but it takes me a bit of time.
> That's why I've enlisted the help of ChatGPT for my first draft and edit. Then I take over for the final touch-ups. It's a real time-saver and feels like it saves even more brain juice.