In cancerland a cure often means 5 years disease free survival. BCG can give that and more. I've only been around 'bladder cancerland' for 8 years. I don't know a lot of people who have got that far out from BCG, like 20 yrs with no recur, to say they are cured. Most people seem to recur.
If you want to get as much info as you can glean on the subject of risk of recurrence and progression, see this:
EORTC Risk Tables for Predicting Recurrence and Progression in Individual Patients with Stage Ta T1 Bladder Cancer
www.eortc.be/tools/bladdercalculator/default.htm
Europe has more definitive guidelines out there than the US. There are many references to published guidelines on WebCafe, under both superficial and invasive blc.
Cheers,
Wendy
PS don't drive yourself insane. Like some wise man told you, let the BCG do its stuff.