1) All other distros that are defaulting to systemd (Arch, Fedora/RHEL/CentOS, Opensuse, Mageia etc.) seem to have generated fewer uograde issues (percentage wise) than Debian. Maybe Debian rushed through the switch-to-systemd testing because they were stuck debating it for so long.
2) To be a vslid comparison, you shoulf have started with FreeBSD9, applied any customisations you had on your Debian installation, and then upgraded.
Systemd has some minor issues in some situations, bit on the whole I think it is a huge improvement (using it on multiple distros and multiple use cases such as office laptop, media player, home NAS/server, production servers at work).