Yes and no....in our case the Wingman helped a LOT. Pulled in 32 channels camping this past weekend. Between the Wingman and the new SensarPro wall plate amplifier, our ability to track digital signals is MUCH better.
I think the difference may be in the OEM antennae. Our RV is a 2008 model built in 2007 and before digital broadcast became as prevalent as it is now. We needed the Wingman to help our antenna receive more digital signals. Your RV is a lot newer and the Winegard unit that came OEM probably has digital capabilities built in already, so the Wingman may have actually hampered it. Sounds like it was cancelling out the digital signals on yours so you only got the analog signals.
From what I have read, digital signals are not as directional as the old analog signals, so we do a lot less turning of the antenna that we had to prior to the Wingman. We also get much better reception with our new TVs that have digital tuners built in.