Calling the great Carl Icahn "the next Buffet" is an insult to Mr. Icahn. If you compare share price gains (the uneducated can simply use Yahoo! charts) you will understand that IEP has out performed Mr. Buffet on a 1 year, 2 year, 3 year, 5 year and 10 year basis. It is a sweep.
IEP has not received the media backing the BRK-A and BRK-B have enjoyed. Once additional investors learn of IEP, the multiple should see some nice expansion.