Complex sentence: Smaller handlers are more likely to sell to independent natural grocery stores and natural product chains than to conventional supermarkets whereas large distributors more often marketed to natural product chains and conventional supermarkets, with a small group marketing to independent natural product stores.
Split into simpler sentences: Smaller handlers are more likely to sell to independent natural grocery stores and natural product chains than to conventional supermarkets. In comparison, large distributors marketed more often to natural product chains and conventional supermarkets, with a small group marketing to independent natural product stores.