To put it in perspective, Iran topped its AFC qualifying group, going 8-1-1 (25 points), ahead of South Korea and UAE. Australia finished 3rd in its group, going 4-3-3 (15 points), behind KSA and Japan. Iran made it to the last semi-finals of the Asian Cup, Australia didn't. It's pretty clear that Iran is the better team.
This is such crap. You're deciding group difficulty based on who goes through, not based on quality of team. Perhaps what Denmark did in the last Euros isn't indicative either, especially when they had an emotional wave buoying them and they had a pretty gilded path.
France's B team, playing for nothing, on a terrible VAR call. Tunisia beat France; France stomped Australia; Australia beat Tunisia. Doesn't really work that way.