I can tell you that. At least when we tried it out in early 2020, Google meet was unable to display other participants to the person who shared his screen. Maybe that has changed by now (or we didn't figure out how to do it) but it was the decisive factor for us then.
Imagine talking to your own slides for 2 hours without any visual feedback from the audience...
Ah yeah, one feature Zoom had was the multi-person grid view which Meet has nowadays but before, Meet would only show primarily the presented content or one speaker at a time
Imagine talking to your own slides for 2 hours without any visual feedback from the audience...