downloading ilegally is stealing, whether you like it or not. copyrights and intellectual property rights are there to protect your ideas, not actual stuff you can run a way with. legally speaking it's the same, you took something which is not yours to take. end of story.
Theft and copyright infringement are NOT legally the same any more than rape and embezzlement are legally the same. They only share the commonality of being illegal. If you still think they are legally the same, then you can go argue with the U.S. Supreme Court about why you think their decisions are unsound.
http://www.law.cornell.edu/supct/cases/copyrt.htm
