I think it's confusing from a user perspective that you have a single "visits web page" trigger when you must enter the values in completely differently.
For non-MKTO pages, you use "contains", remove the https:// or http://, and plug in the URL.
For MKTO landing pages, you use "is" and use the formal Marketo name of the page.
But this isn't really documented anywhere and isn't even a hint text on the trigger on how to use it. Extremely difficult to figure out for new users.
It also causes the user to have to implement separate triggers anyway.