I came for this comment. The big difference between JIRA and SAP is that SAP is a "batteries-included + kitchen sink" package (which tends to require molding business processes around it). My problem w/ JIRA is that anything beyond the simplest workflows/BPM requires purchasing a ton of paid plugins that tend to be abandoned over time. Atlassian knows what users want but they are dog-slow at bringing them to fruition.

I only wish that companies also accepted that you need a ton of consultant time before you can actually use it like it's known for SAP. The out-of-the-box experience of JIRA is pretty poor.