At this website, I found the following guidance:
When you are explaining a particular word or phrase by using
quotations around it, or identifying the name of a book, song or
movie, you will not necessarily need to use a comma before the item.
In these cases, the quotations are used to support the primary meaning
of the sentence. For example:
The movie “Bedknobs and Broomsticks” is still one of my all-time favorites!
Interestingly enough, the rule is not definitive - "will not necessarily need" implies it wouldn't necessarily be improper to use the comma, if you felt it would be beneficial.
Incidentally, most of the comma guidance I perused - including guidance on ELU - indicated that the comma in your first example would indeed be proper, as you stated.