Part of what makes headstrong so good is her ability to break armor. The cripple effect is nice but considering how many of her abilities are considered "throws" it's a lot of bonus damage, especially in certain prize fight challenges like the current one. She's also one of the better options for silver and bronze hands down, especially when paired up with Understudy. My only gripe with her is that pairing her with Understudy almost seems like a requirement because of how strong their pairing. 50% increase in damage to throws on top of the armor break basically made silver and bronze fights a joke before the modifier changes. Still, her ability is still solid as a solo fighter and she gets good enough stats to compete with the higher tier characters.