By Andy Silvester NEWS of Mike Ashley’s departure from Frasers also signals the end of one of retail’s most tempestuous rivalries, after JD Sports’ boss Peter Cowgill exited his own sportswear giant earlierthis year. After decades of high street tussle, the two retail titans have now both relinquished their roles behind two of the country’s largest athleisure brands. A comparison between the two heavyweights is “inevitable”, retail expert and former head of buying for Selfridges Wizz Selvey told City A.M. Certainly, Ashley is leaving on a high, with Frasers having been able to distance itself …