Heavyweight boxer Larry Olubamiwo tested positive just for EPO

The heavyweight boxer Larry “War Machine” Olubamiwo administered several anabolic steroids, HGH, IGF-1 and other doping medicines during 6 years. Although certain tests have been conducted earlier, he was caught only in January 2012. After a fight against Sam Sexton Larry Olubamiwo tested positive for banned preparations. Metabolites of steroids were not found in his sample. The boxer tested positive for EPO. EPO is a blood boosting product.
Long-term usage of banned products 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 application of 13 different banned drugs is a real success of the UKAD in the struggle against doping.  
Andy Parkinson claimed that it was an unusual case. The boxer used steroids and other related preparations for prolonged time without fear to spoil his health, career and reputation. He was sentenced to 4-year suspension.
But the alarming fact is following: Olumamiwo could avoid detection for prolonged time, despites great efforts of anti-doping officers to “clean” sports from application 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 connected with illegal sale of anabolic steroids and other related drugs in the US. Then the UKAD conducted a test that 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 officers. He affirmed that the case demonstrated that cheating couldn’t be hidden.
What is your point of view about the case? Do positives for EPO and the ban of Olubamiwo display that anti-doping officers succeed? Or does the case manifest that anti-doping policy is not suitable?
Everyone may make own conclusion. But it is clear that the athlete could apply many forbidden medications for 6 years without being caught by anti-doping officers.