A lot of what you see on TV requires a lot of footage to capture a few seconds of action. Many TV archers have the draw weights of their bows lowered to a point where holding for extended times to facilitate the camera is the only way to get those great kill shots. As such, we see less than optimal penetration or poor shot placement.
As a hunter that has killed many deer with a compound, know that a 70lbs modern compound and 450 grain arrows have blown clear through more animals on the North American continent that you could imagine.
I love traditional archery but do not mistake what you see on TV for a limitation in modern compound bows, from experience, they can and will put a carbon arrow through a concrete block with ease.