Yup, Im just thinking that could explain why people are telling him it's wider then a splash.
We did some work on my friends Ranger today which is the splash/flareside, so I measured it for you man to help. So measure the distance between your tail lights or tailgate.
Around 46" (between taillights) = Splash/Flareside
Around 54" (between taillights) = Fleetside