The SSA shies away from the social spotlight preferring to work behind the scenes. The EIA embraces the social spotlight to inspire the masses. Every group needs both.
The IAF will meet people's needs to make them happy (you should eat because hunger makes us sad). The SSA does the same based on practical necessity (you should eat because you need sustenance to live).
The SSA, because they see immediate and tangible needs will focus on short-term goals. Where the DLF as a builder, will think long-term growth and maturity first and then execute from there.