You likely aren't going to really appreciate the difference in a mere 8x10" print, but enlarge to 16x20 and larger and the difference becomes quite obvious!

Since the same subject covers more film area on a larger format, you have less graininess, better tonal gradation and color gradation visible from medium format when viewed at the same final size.

I once was enrolled in a workshop at the local community college, and we would have slide viewings of three shots from each class member. I shot in medium format, and the ooh's and ahh's from the class were notable when my slides were projected because of reduced graininess and better tonal and color representation, and the instructor (who was a contemporary of Ansel Adams) used that as an opportunity to tell the class about the reasons for the visual impact of the larger format.