does a detached over-the-air television antenna help?

We have been using the Wineguard Sensar IV with the Sensar Pro Wall plate since it came out several years ago and were quite satisfied until my son bought a Antennas Direct ClearStream 2V TV Antenna
We mounted it on a plywood base and put it on the roof of our trailer and it outperformed our Wineguard by quite a bit. All the pixelating was gone and the stations stayed tuned in much better. Didn't get any new stations but the old ones were much more watchable.:)
P.S. Our trailer is permanently parked in our sons campground now. Does not get moved anymore.
Barney