There seem to be much more changes, even that is probably the most important one.
Time Turners don’t work the same (in canon, there is no hard limit on 6 hours, it just becomes exponentially dangerous if you try that), the Sirius Black/Pettigrew thing doesn’t turn out the same at all, the Free Transfiguration stuff doesn’t seem to work the same, …
And as others mentioned, Voldemort is much more competent.
There seem to be much more changes, even that is probably the most important one.
Time Turners don’t work the same (in canon, there is no hard limit on 6 hours, it just becomes exponentially dangerous if you try that), the Sirius Black/Pettigrew thing doesn’t turn out the same at all, the Free Transfiguration stuff doesn’t seem to work the same, …
And as others mentioned, Voldemort is much more competent.