1. In terms of nutrition, 100g calcium milk biscuit contains 9.7ug of vitamin and 8.4g of protein, while 100g Wangzai steamed bread contains 1 1.2ug and protein 15.4g, which belongs to Wangzai steamed bread.

2. In terms of cost performance, Wang Zi steamed buns are affordable, about 20% cheaper than calcium milk biscuits, so Wang Zi steamed buns are more cost-effective.