The RF I used was really worn, with only a dot in the middle indicating where the hole used to be.
Stadium: MFB Attack stadium
beylauncher used for both beyblades, Flame Bull DF145WB always launched first at ~80% power.
Storm Wolf 100RF Vs Flame Bull DF145WB
Storm Wolf: 13/20 wins, 3 by OS
Flame Bull: 7/20 wins, 1 by KO
Flame bull win %: 35%
I found that storm wolf made flame bull "jump" a lot when it hit flame bull while flame bull was circling the stadium and storm wolf was in the centre. This was the main reason for Flame bull's wins, and wall saves.
Since there were so many "jumps" from the use of storm wolf, I tried using Rock pegasis 145RF against Flame bull.
Identical conditions
Rock Pegasis: 9/10 Wins, all by KO
Flame bull: 1/10 wins, KO
Flame bull's win came from Rock's recoil and a lucky wall save.
I used WB since I don't have B, however IMO it should help this combo rather than hinder it.
All in all, I have to say that flame bull is pretty bad.