All I know is that 720p60 is to make 3D or 2D models more beautiful and lazy in my opinion. I never seen what 1080p30 looks like because I watch videos on my phone and it allows me to see videos up to 720p or 720p60. But I imagine it looks more colorful in CGI animations.
@@acth490 Phones with higher resolutions also support 1080p. Now days, most phones are 1440p, which is greater than 1080. I can also do 1080p60 but that will take way too much time.