Pros

You are able to assign tasks to other people if you collaborate.
It can sync with Apple Reminders so you can use Siri to add tasks from your phone, computer, iPad or homepod.
You can collaborate on tasks with other people that use Microsoft To Do.
Syncs with Outlook Tasks.
Available from the web so you can access your tasks on devices that don’t allow the app downloaded or you to login to your personal account on the desktop app.

Cons

It does not have Deadlines/”Due” Dates.
You can’t add details to subtasks.
No advanced search like using tags: to search for tags.
No priorities. You can only star tasks to give them any kind of priority.
Feature parity between devices means that desktop has the natural language processing that mobile does not have. Also, mobile has the ability to have custom themes and background images while desktop does not and those images that you upload on mobile do not sync to your desktop or web applications.