Well... I completely ignore thier strength in battle. Ruby Weapon is hotter than Ultima Weapon but Ultima Weapon is more "pure awesomeness" and "badassness". And pure awesomeness + badassness > Hottness... to a small degree.

As for the Emerald VS Omega... Emerald is shiny while Omega is overrated... hmmm... very well... Emerald gets my vote. Shinyness > Overratedness. And Diamond gets my 3th vote. They are equall in pityfullness since they both gets killed in a tragic way. I miss them. But Diamond wins in kill-Rufusness!

And for the last time... Ruby is a GIRL!!!