Single central cylinder or dual side cylinders on dump trailer?

Recently ordered a 14k dump trailer, now that I've picked it up realized that what was listed on the spec sheet as a dual 4" side cylinder configuration actually appears to be a larger central cylinder configuration, which is not a scissor lift. It is dual action because it has electric down in addition to gravity down. Wondering how big of an issue this is, thinking of contacting the dealer because the product is not as listed but not sure if it is worth the hassle of returning for a model with dual cylinder. First time dump trailer owner looking for feedback from those with more experience.