Do positives of Olubamiwo for EPO represent success of anti-doping efforts?

The heavyweight boxer Larry “War Machine” Olubamiwo took certain anabolic steroids, HGH, IGF-1 and other doping preparations during six years. However certain tests have been conducted earlier, he was caught only in January 2012. After a fight against Sam Sexton Larry Olubamiwo tested positive for prohibited preparations. Metabolites of steroids were not discovered in his sample. The boxer tested positive for EPO. EPO represents a blood boosting drug.
Long-term administration of prohibited medications by Olubamiwo was a real embarrassment for the United Kingdom Anti-Doping. Andy Parkinson, the CEO of the UKAD, tried to note that the suspension of Olubamiwo for application of 13 different prohibited preparations is a real success of the UKAD in the struggle against doping.  
Andy Parkinson noted that it was an unusual case. The boxer applied steroids and other related preparations for long period of time without fear to spoil his health, career and reputation. He was sentenced to 4-year ban.
But the alarming fact is following: Olumamiwo could avoid detection for long time, despites significant efforts of anti-doping officers to “clean” sports from intake of doping drugs.
Olubamiwo was caught just because the UKAD was informed by the United States Drug Enforcement Administration (DEA) that he was implicated in an investigation linked with illegal sale of anabolic steroids and other doping drugs in the US. Then the UKAD conducted a test that resulted in positives for EPO.
Robert Smith, the General Secretary for the British Boxing Board of Control, supported the statements of Andy Parkinson about efforts and success of anti-doping officers. He affirmed that the case demonstrated that cheating couldn’t be hidden.
What is your opinion about the case? Do positives for EPO and the suspension of Olubamiwo manifest that anti-doping agencies work successfully? Or does the case show that anti-doping system is not suitable?
Each person may make own conclusion. But it is clear that the sportsman could apply many forbidden products for six years without being caught by anti-doping officers.