Don’t you think you could tell the difference between a sirloin steak and skirt steak? Totally different shape, texture, level of fat, and flavor. But not sure

Don’t you think you could tell the difference between a sirloin steak and skirt steak? Totally different shape, texture, level of fat, and flavor. But not sure one could tell ground beef (no regulation on what cuts are used: could be chuck, brisket, a mix) from the same ground beef with some LFTB mixed in.