Someone on TV just said Trump "is the P.T. Barnum of Business". Is that meant to be a compliment or a dig?

I know about the Barnum and Bailey circus but wasn't that very successful? Or is the dig about Trump turning everything he is involved with into a circus? Didn't Barnum say there is a sucker born every minute? Does Trump think so too?  Does Trump make suckers out of those with whom he deals? What's the connection between PT and DT?