ya'all living the nice and relaxing life that vce is, enjoy it, because uni is like vce's daddy
As someone who's experienced a bit of both, it's important for us not to generalise
If you go into Uni with the mentality that you need to average 99 or 100 (just like VCE) on all your assessments, you're probably going to find that impossible. It is definitely a lot easier in high school.
But if you go into Uni with the mentality that you just have to perform comparatively well, you can start to find that you can probably achieve a comparatively strong average of 85-90 with less effort than what it takes to get a, say, 99.95 in high school. This is due to a number of factors, including the fact that plenty of uni students tend to take up part time jobs during their period at uni, whereas in VCE most students tend to drop their jobs and focus on study.
Maybe you may have had an easier than expected time in VCE and been a bit shocked by the transition (the transition was really rough for me personally).