Captain America is a longstanding Marvel hero who has upheld Truth, Justice, and The American Way. Bucky has tried to follow in his footsteps. Even after temporarily turning into the Winter Soldier, in the end he became Captain America.
Of course the real Captain America will always be stronger than the Bucky idea of Captain America. Bucky is Caps sidekick and that’s just the way it is. Bucky will be back….sooner than you may think. Captain America wins.