There are so many different opinions on this but from the research I did on it, (years...and talking to holistic vet, etc) I believe canned can be much better than kibble. I feed Sophie a mix of raw and canned...one in morning and one at night I also don't believe feeding both together hurts a thing though, theory has been they digest at different rates so could cause gastric issues but never heard of a case.
Canned doesn't have preservatives or chemicals since it is canned fresh and doesn't have to sit out on a shelf. It has a lot more moisture than kibble (and more palatability) good for kidneys and avoiding UTI's. It usually has much less, if any, (grain free) carbs and grain than kibble. It's also not true that eating canned food creates more dental problems than kibble. They both will cause plaque buildup. Kibble is cheaper and more convenient to feed which is why a lot of people with multiple or big dogs feed kibble.
I am careful to get canned food without carageenan which is a thickener, as it is suspect in causing gastric issues with some dogs, so just to be safe I get ones that use potato starch, (Weruva is what I am using right now) I also make sure the cans are not lined with BPA.
I give Sophie probiotics also (Essentials) as she tended to have stomach issues when on kibble. (diarrhea and clear the room gas!!) the raw and canned have totally cleared her up. (but every dog is different).
There are a lot of good articles out there here is one from Whole Dog Journal
The Benefits of Canned Dog Food - Whole Dog Journal Article
It used to be that canned was worse than kibble, but that is no longer true in general. The stigma of feeding canned food sticks with it though.