I agree that it depends on what you are hoping to do online.
1. Your connection type just means this amount of data moves from Point A to Point B every second.
2. Okay, now that data is at Point B, now what? If Point B is your computer, then what are you going to do with that data?
For instance, you can have a connection that allows you to stream 4k video, but does your computer have the ability to PLAY 4k videos?