Why does everybody always ask about which is better?
It all depends on your interest and your future goals. Basically, both are not that different. Try to do thorough research for those two professions first, then decide which one you are more interested in and see if the career matches your future goals.
It’s not about which is better than which, it’s about what is best for you.
Question is similar to asking which is better Apple or oranges? Both have their pros and cons. It all depends on your interests. You are good at troubleshooting, issues excite you, you are a techie guy must choose sysadmin. If you are good in communication, consultancy, analysis tool make you feel good then go with SAP