User blog comment:GaoMikadoFan 4/My Buddyfight Dragon Deck/@comment-24737504-20140519131716/@comment-4844839-20140520032826

Let me (try to) help:

1. Yes, Halberd Dragon is 100% better. Seeing as Jamadhar Dragon is situational, you can either run 2x Jamadhar on main deck or just put it in your sideboard if you find your opponent uses a very high defense monster later on. (you can run 10 cards in sideboard)

2. You can consider ​Blade Wing Dragon. It has move which is very useful for defense.