I have the full graphics display but don't have the smaller display so I can't give you a 100% accurate comparison...

But I do know that it displays each hotend & bed temp with a small graphic for the items as well as a fan speed indicator with a graphic. If printing from the SD it has a progress indicator, shows you the hot end position and a message area that can be used by slicers. To I did at things like heating printing finished etc.

I think if you plan to go multi extruder I would suggest full graphics display but for single I don't think it really matters. I currently use a dual extruder.

Tldr: it has more room to display thing with cool graphics along with info