Of the two, Sunset2 is the better option - my mind simply can't rest looking at Sunset1, the green bias is just too sickly, whereas Sunset2 is more convincingly autumnal.
Colour (and saturation and other qualities too) can be hard to judge sometimes, but for general photography the issue may not be about accuracy but about psychology. And your question of 'which?' is valid because it can be easy to get bogged down with a work of your own and to lose the ability to stand back as it were.