Comparing high quality meat with a highly processed "meat alternative" shouldn't be judge on taste, and they're not comparable otherwise.
Beyond Meat burger ingredients:
Water, Pea Protein*, Expeller-Pressed Canola Oil, Refined Coconut Oil, Rice Protein, Natural Flavors, Cocoa Butter, Mung Bean Protein, Methylcellulose, Potato Starch, Apple Extract, Pomegranate Extract, Salt, Potassium Chloride, Vinegar, Lemon Juice Concentrate, Sunflower Lecithin, Beet Juice Extract (for color).
Many of these things are not good for many people, and many if not the majority of people aren't connected to their body properly, conditioned by ego mind disconnecting them. Personally I can't do pea protein, canola oil, coconut oil, rice, bean, potato, apple, vinegar, lemon, or lecithin. Those all agitate my GI tract causing different levels of discomfort or pain.
What you find in meat however is the same as what's naturally in humans, it's the animal concentrating the plants they eat into nutrients, protein, etc - and high fat red meat like beef has exactly what your body and brain needs and in the right portions.
I'm not trying to argue it's not possible to make a comparable option, however it's highly unlikely. I do wonder if a cultured meat substitute is possible as well, as the highest quality meat are from animals in their natural environment under natural environmental stress conditions, it's more likely to create a comparable product though; getting cost down and texture will be the biggest challenges.