Both are about the same size now. I’m looking forward to red tomatoes in a couple of weeks. Yummy! My first varieties this year will be New Girl (above photo) and Orange Blossom, sowed Feb 21.
Unfortunately potato fruit contains large amounts of the toxic alkaloid solanine, and is therefore poisonous.
Potatoes can be grown from seed, though they don’t breed true; Wikipedia says to finely chop the fruit and soak it in water, the seeds will separate from the flesh by sinking to the bottom after about a day (the remnants of the fruit will float).