I Sell Generic & PL of the Same Product. Need advice

Ive been selling a generic product for about 3 years now and its always done well. We started getting worried that sooner or later a chinese seller would try to hop on and steal the listing or sell the same thing cheaper. So we created a PL listing, with high resolution photos, optimized listing and a cheaper price. For almost 6 months weve been getting about a 20% return rate on the branded listing and only a 3-5% on the generic. It makes no sense to me