Here's why:

* Size: The sun is classified as a yellow dwarf star. While it's much larger than Earth, it's considered relatively small compared to many other stars in the universe.

* Giants: Giant stars are much larger than our sun, with diameters often hundreds of times greater. Examples include red giants and supergiants.

* Supergiants: Supergiants are even larger than giants, with diameters thousands of times greater than our sun. These are some of the largest known stars.

So, while the sun is massive compared to our planet, it's actually a middle-of-the-road star in the cosmic scale.