Steve Jobs very notably had the 'good' kind of pancreatic cancer which has a very high success rate from treatment. There are two types of cells in the pancreas, exocrine cells and endocrine cells.

1. Exocrine cells - 95% of pancreatic cancer are in the exocrine cells which produce the enzymes that are responsible for food digestion, and 95% of exocrine cancers are adenocarcinomas which impact the cell lining of the pancreatic duct. This is the bad one, with a survival rate below 10% 5 years after diagnosis.

2. Endocrine cells - The other 5% of pancreatic cancers impact endocrine cells which produce enzymes to regulate your blood sugar. Jobs' cancer was reportedly a Glucagonoma which was overproducing glucagon leading to very high blood sugars. These are extremely rare cancers but broadly, with early surgery the 5-year survival rate is above 85%. The 10 year survival rate is above 65%.

That's why there was so much criticism for Jobs' delayed treatment. His tumor was first diagnosed in 2003 and he basically ignored it for a year in favor of alternative treatments and healthy eating. By the time he actually had surgery, the cancer had progressed to mets in his lymphs and his liver.