Natural Rubber Antioxidants are generally considered to be better than synthetic antioxidants for several reasons. 

Firstly, natural rubber antioxidants are derived from natural sources such as plants, fruits, and vegetables, making them more environmentally friendly and sustainable compared to synthetic antioxidants which are manufactured from chemical processes. 

Secondly, natural rubber antioxidants have been found to be more effective in preventing the degradation of rubber products and extending their life span. This is because natural antioxidants contain a complex mixture of compounds that work synergistically to provide better protection against oxidation compared to single synthetic antioxidants. 

Furthermore, natural rubber antioxidants are less likely to cause harmful side effects compared to synthetic antioxidants which may contain toxic chemicals or residues. 

In addition, natural rubber antioxidants have been shown to have other beneficial properties such as anti-inflammatory, antimicrobial, and UV protection effects. 

Overall, the use of natural rubber antioxidants is preferred over synthetic antioxidants due to their effectiveness, sustainability, safety, and additional health benefits.