When comparing the nutrition of plant-based and animal meats, an important factor to look at is their saturated fat content. Although fats are a necessary part of a healthy and balanced diet, consuming large amounts of saturated fat can increase levels of low-density lipoprotein (LDL) cholesterol, and increase the risk of coronary heart disease and strokes. Saturated fats are found in high quantities in red meat, but are usually present in smaller amounts in plant-based meat products. One plant-based source of saturated fats to watch out for is coconut oil.
On the other hand, some plant-based meat products contain high quantities of sodium, and others may not contain enough vitamin B12. Although some manufacturers add this nutrient to their fake meat products, others do not. But this can be rectified by taking a vitamin B12 supplement.
Still in its early stages of development, the full nutritional value of lab-grown meat is difficult to ascertain. Yet because these meats are grown from just a few cells, there could be the potential to manipulate their growth and nutritional makeup to create an even healthier alternative to animal meat.
Depends on the ingredients, you have to ask more specific questions.
There are studies on this, but it’s a somewhat novel thing if you ignore traditional foods like tofu and seitan.
https://sentientmedia.org/fake-meat/