You mean like major advantages over Illustrator?
CorelDRAW! 5 was my first real vector graphics tool back in the days when Windows 3.1 came on a couple dozen floppy disks. I used it to varying degrees right up until the X versions came out. (I think Graphics Suite 12 was the last version I had.)
Most of that time (probably starting sometime in 1998), I also used Illustrator, as an all-Adobe workflow eventually took hold. There were probably times when Illustrator was a better choice for some production-related reason or other, but I never saw it as the superior application, and still wouldn’t. I haven’t used Corel products now for quite some time, so this is no expert talking, but now with PDF effectively serving as a universal delivery format of sorts I’d expect the playing field is pretty level. It might just come down to features. If there’s a particular feature in one that the other doesn’t quite match, and it’s vital for your particular workflow, maybe you lean into that, but it would have to be pretty specific. Plus, if you look at the way both companies do business nowadays, it might get harder yet to choose Adobe over Corel.