Job's thermonuclear threats were about Android & Google, not Samsung because Schmidt was on Apple's board during the development of Android.

> "I will spend my last dying breath if I need to, and I will spend every penny of Apple’s $40 billion in the bank, to right this wrong. I’m going to destroy Android, because it’s a stolen product. I’m willing to go thermonuclear war on this."

The falling out with Samsung was related, but more about the physical look of the phone