Anvil will not break through Redstone, or normal torch when placed above it + More

An anvil will not break through a redstone torch, or regular torch when placed directly above it. When placed on a torch, the torch disappears, and when placed two blocks above it, it goes through the torch, not breaking it.

Further Proof: http://www.youtube.com/watch?v=CEja2kAAt98&feature=youtu.be