libswt-gtk-3-java conflicts with libswt-gtk-3-java

[Silvan Marco Fin]

root@typhon:~# lsb_release -rd
Description: Ubuntu 12.04 LTS
Release: 12.04
root@typhon:~# uname -a
Linux typhon 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
root@typhon:~# aptitude show libswt-gtk-3-java | grep libswt-gtk-3-java
Package: libswt-gtk-3-java
Suggests: libswt-gtk-3-java-gcj
Conflicts: libswt-gtk-3-java
root@typhon:~# dpkg -p libswt-gtk-3-java | grep libswt-gtk-3-java
Package: libswt-gtk-3-java
Suggests: libswt-gtk-3-java-gcj
root@typhon:~# apt-cache policy libswt-gtk-3-java
libswt-gtk-3-java:
  Installed: 3.7.2-2
  Candidate: 3.7.2-2
  Version table:
 *** 3.7.2-2 0
        500 http://de.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages
        100 /var/lib/dpkg/status

Thats weird.
1) Why does the package conflict with itself?
2) I don't understand, why apt(itude) and dpkg report different information.