Does it matter if nobody is greater? The fact remains that R’ Lichtenstein shlita is a HUGE gadol.
He was a talmud of R’ Hutner zt”l as well as R’ Soloveitchik zt”l, both of whom were from the gedolei hador. He is a well-known Rosh Yeshiva. Does it matter if he’s the best, or “just” in the top 10 or top 20? Either way, he knows more than ANYONE who posts here in the CR, and is worthy of respect.