Does it matter you're wondering? As more and more people jump on the Teams train, the crossover of Teams and Outlook is undeniable. You have already noticed that your Outlook calendar also shows up in Teams. You have maybe also noticed you can schedule a Teams meeting from within Teams and in Outlook. So the natural question is - does it matter? Short answer - YES!
Either way - you will have a link and call in number (depending on your calling plan in Teams).
If the meeting is part of a Team or Channel in Teams, it's easier to create the meeting invitation in Teams so you can have the history and any chats or files that are part of the meeting all stay in the designated channel.