I think over the last few decades, he could make deals just because the Buffett name held so much influence. If Buffett was investing, then others could assume that the company won't go bankrupt.

That's certainly part of it, but in the "buying mispriced assets" category, Buffer made some very smart, large bets. During the Great Financial Crisis, BH made a $5 billion investment in Goldman Sachs that eventually made them billions in profit when everyone else was running for the hills.