Description of problem:
Jackson JARs for RPM were compiled on JDK6, for ZIP distribution compiled on JDK7. Thus there are some differencies in these JARs, in classes metadata, META-INF/MANIFEST.MF, etc.
But both versions were compiled for JDK5, so it is not a functional issue.
Version-Release number of selected component (if applicable):
EAP 6.3.0.ER10, RHEL5 i386
This is not a regression. It has been like that since EAP 6.0.1 and it is a well known fact that RPMs have to be recompiled for each OS (differently from MEAD wrappers). BTW, this affects ASM as well. These are the last two non-MEAD builds left (they proven to be hard to get in MEAD on the current versions at least, which are not built with Maven upstream).
The the differences are expected.