A logo is supposed to created in such a way that it can be viewed both monochromatically, black and white, and in color and still look good, yours rely on special effects like the outer glow, drop shadow, etc. Notice how your brothers are made in a way they look good without color, yet color can be added to boost the look, without actually relying on the color.
It has to be possible to resize a logo to fit from a huge banner down to something small like a business card or pen, this is possible with your brothers but not quite as much with yours. His first is simple yet effective, although I believe he could make the text larger without losing effect, but the bottom one doesn't play as well in small sizes as with the large.
I'd suggest learning about effective logo design rather then applying a bunch of techniques for online display to something intended for print.