Larry Olubamiwo was caught by UKAD after he used banned drugs for 6 years

The heavyweight boxer Larry “War Machine” Olubamiwo used certain anabolic steroids, HGH, IGF-1 and other doping medicines during 6 years. Although several 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 medication.
Prolonged application of prohibited preparations by Olubamiwo was a real embarrassment for the United Kingdom Anti-Doping. Andy Parkinson, the CEO of the UKAD, tried to prove that the ban of Olubamiwo for administration of 13 various forbidden products is a real success of the UKAD in the struggle against doping.  
Andy Parkinson claimed 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 suspension.
But the alarming aspect is following: Olumamiwo could avoid detection for prolonged time, despites significant efforts of anti-doping officers to “clean” sports from administration of doping preparations.
Olubamiwo was caught only because the UKAD was informed by the United States Drug Enforcement Administration (DEA) that he was implicated in an investigation connected with illicit sale of anabolic steroids and other performance-enhancing drugs in the US. Then the UKAD conducted a test which resulted in positive results 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 agencies. He confirmed that the case manifested that cheating couldn’t be hidden.
What is your opinion about the case? Do positives for EPO and the ban of Olubamiwo demonstrate that anti-doping agencies succeed? Or does the case show that anti-doping system is not proper?
Everyone may make own conclusion. But it is clear that the athlete could take many forbidden drugs for 6 years without being detected by anti-doping officers.