Jeffrey Gundlach, left, thinks oil tycoon T. Boone Pickens is wrong about energy prices rebounding to $90 this year.Hollywood Beach, Florida (CNNMoney)Don't buy all that talk about oil shooting back up to $90 a barrel. That's the message from bond king Jeffrey Gundlach. "I bet a great deal of money that oil is not going to end the year at $90," Gundlach said at ETF.com's Inside ETF Conference. If would be easy to dismiss the comments from Gundlach, founder of DoubleLine Capital, just because he's a bond guy. But he correctly predicted back in October that oil would tumble to $70 a barrel. He was also early to note Saudi Arabia may actually want low prices to pressure rivals like Iran. Where's oil going next? Some believe oil could quickly rebound from its current level of $45. T. Boone Pickens, the oil tycoon, told CNBC in late December that Brent crude (the global benchmark) would zoom to $90 to $100 in 12 to 18 months. Last week Pickens said crude could hit $80 by year end. "I just think he's wrong," Gundlach said. "He knows more about energy than I do, but I know a lot about markets." That's an understatement. Gundlach is coming off a fabulous year that has led many to crown him the bond king, a title previously reserved for Bill Gross, who left Pimco amid turmoil last year. Gundlach's firm left its peers in the dust last year. DoubleLine's flagship Total Return Bond fund (DBLTX) and its Core Fixed Income fund (DBLFX) both finished in the top 10% of their Morningstar groups last year. Emerging markets? No problem. DoubleLine'semerging markets fund (DBLEX) finished in the 96th percentile, according to Morningstar.