Why these? All 3 are the 8th Gym Leader of their respective regions.
Why not Giovanni? Being the leader of Team Rocket, he's on a league of his own.
Why not Blue? Being the rival, he too is on a league of his own.
Who is better?
Who would win a battle?
Who is more useful? (lolwut?)
I like Juan the most. He was also the toughest out the 3 for me.
As for who would win a battle, its like a rock paper scissors thing. Clair can beat Volkner as Dragons resist Electric Type attacks. Volkner can beat Juan with his Electric attacks and Juan can beat Clair with his Ice Beam users.
EDIT:Wallace is not here because he is on a league of his own. Technically, he's above the league.
Iris and Shaga? I'm not going to include Gen V characters in polls until I myself have played the games. Gen V Pokemon are a different matter.