I'm confused around sources and their reported calories
A can of Great Value sardines is 100 calories and 16 grams of protein for 74 grams drained. But the entry doesn't include the amino acid breakdown so I looked up the nccdb entry for sardines in water, drained and get 144 calories and 18.7 grams of protein. I've seen similar discrepancies on other food items. How should I be thinking about this? Which source should I trust?