Ho-oh, and it isn't even a contest. Ho-oh has significantly higher stats than Fearow, and it being part Fire type is much better than Fearow being part Normal.
With the moveset you currently have, it can deal with Bruno and Koga, as well as a bit of Karen's team. In terms of Kanto trainers, Ho-Oh can take out Erika, Janine, and Giovanni, to an extent.
Hope I helped!