I just want to add this comment which I wrote else where.
The "success" of treatment here is defined as the removal of H. pylori. Removal of H. pylori may or may not eradicate your current symptoms. For those with severe symptoms usually would experience better improvement in overall quality of life. For people with little to no symptoms, they normally do not feel the improvement and for a small group of people, due to the antibiotics killing off the good bacteria in the guts, may develop IBS.
Nevertheless, we still recommend the removal of H. pylori because it is associated with stomach ulcer and cancer. For young people where they are young and healthy, they are most likely asymptomatic. However, as they get older, their immune system and repair mechanism get poorer, the wound cause by H. pylori may become irreversible. Then it may be too late for a cure.