The major advantages are the diversity of knowledge, ideas and tools contributed by team members, and the camaraderie among members. A characteristic commonly seen in high-performance teams is cohesiveness, a measure of the attraction of the group to its members (and the resistance to leaving it).
Another important difference is that vitamin D2 has a shorter shelf life compared to vitamin D3. This decreases the potency of the vitamin if it is used as a vitamin supplement. Some researchers however feel that their efficacy is the same.
The natural ones are D3, and they contain the same vitamin D your body makes when exposed to sunshine. The synthetic ones are vitamin D2, which are sometimes called ergocalciferol. Once either form of the vitamin is in your body, it needs to be converted to a more active form. Vitamin D3 is converted 500 percent faster than vitamin D2. Interestingly, it was previously thought that the kidney exclusively performed this function, as least that is what I was taught in med school.