Surimi is not mostly fish, it is mostly soy, wheat, various starches. Fish (blended Alaskan pollock usually) is a minority of material in most packagings.

This came as a shock to me. The macronutrients don't lie, though. Fish is protein and a little fat, carb content is fractions of a gram, and these labels are telling me that there's more carbohydrate than protein.

The ingredient labels that the FDA allows, do find a way to lie. If you read a ten-ingredient label that says "Ingredients: Beef, wheat flour, corn flour, oats, textured vegetable protein, canola oil, vegetable oil, xanthan gum, carageenan, salt", and tell people that this is the highest-percentage ingredient to the lowest-percentage ingredient ordering, most people will assume it's >75% beef, but all the label is saying numerically is that it's >10% beef; If every other ingredient was in the 9.0 to 9.9% range then the beef input would be around 1/6th of the material. Add more ingredients and this can be manipulated even more.

I also don't think this is comparable. Blended Alaskan pollock had an immune system before it hit the cold chain.