I believe the correct answer: is it suggests that one
opponent is much smaller than the other.
In this excerpt from the newspaper "A David and
Goliath Battle Rages Over Sunshine Park", the mentioning the David and
Goliath suggest that one of the opponents in much smaller than the other. This
Biblical parallel alludes that even If regarded as the “small opponent”, Chelsea
Spree has an opportunity to win, just as David had.
Answer:
Here's some examples, you can switch it up or around to how you see fit
Explanation:
She was rather envious, while her sister was warmhearted.
One of the sisters was envious and cold, and (or while) the other was warmhearted and kind.
Her sister was envious, but she was warmhearted.