Barrick, Newmont Race to Plead Merger Cases to Top Investors

Barrick Gold announced a $17.8 billion hostile bid for Newmont, aiming to unlock $7 billion in value. The bid was made before Newmont could complete its merger with Gold Corp. CEOs Gary Goldberg and Mark Bristow exchanged criticisms over the deal, with both companies reaching out to investors, many of whom overlap. The deal's success may hinge on personalities and investor preferences. Barrick argues that synergies are the premium, while Newmont questions the $7 billion figure. The no premium approach began with John Thornton's bid for Randgold, aiming to overhaul the industry.

How do the personalities of Gary Goldberg and Mark Bristow differ according to the text?

What is the significance of the $7 billion worth of synergies mentioned by Bristow?