Nominees for Hubnuggets are always Hubs from newcomers who have interesting topics.
Hubnuggets are chosen by some of our colleagues who pick up among the Hubs of newcomers the most quality ones.
Well, nomination for Hubnugget is a way to support new writers and encourage them to persist in writing. Hubs from "older" writters never can be nominated for Hubnuggets, so enjoy yourself.
It is not only Hubscore that matters, it is topic of your Hub that counts, style of writing, plus you have already, for newcomer, excellent profile score. (BTW, you will also see that score is constantly fluctuating up and down- profile and the score of your Hubs, but this is another story).