The Difference Between a Red Sphere and a Red Sphere

I created two spheres that are very similar in appearance, but made with different programs. When using Illustrator, the size of the art board is infinite. Instead of using pixels like I did when making the photoshop one, Illustrator used a bit-map. I found illustrator a tad bit easier when it came to the gradient tool because i'm used to using it and although Photoshop has a very similar gradient tool, Illustrator allows you to do more creative inclined things. The pen tools are very different on Illustrator and Photoshop, but I didn't have to use anything other than the initial shape tool and then the gradient tool. I think that gradient is an okay way to make something look like a sphere, but knowing about the 3D Revolve effects you can use on Illustrator just made these gradient spheres look amateur. I added my (kinda) signature onto my Illustrator sphere, and put a gradient inside of it. On my photoshop sphere I made it bouncing.