First of all the difference is really only about $500 because the material station is separate, but either one can use it.
But here's a comparison chart
[URL unfurl="true"]https://bambulab.com/en/compare[/URL]
Long and short of it is that the X1C has the premium version options of everything
Edit - good review here
[MEDIA=youtube]bWPKiLU66MM[/MEDIA]