PSM 1 Vs PSPO 1

Hi everyone,

I'm about to take the PSM 1 assessment and soon after the PSPO 1. Passing the PSM 1 with a good score is enough to think that I can pass the PSPO 1 with success?

Which are the differences? Do they share only some questions or most of them?

My preparation is based on Scrum Open assessment, testtakeronline.com, Scrum Guide, Software in 30 Days, Agile Game Development with Scrum and most of all daily experience in a Scrum Team.

Any advice would be appreciated. Thanks.