The smartest thing they did with the US version of The Office after season 1 was to make Michael highly competent in sales and its longterm relationships. S1 and the UK version of the show viewed the boss as incompetent at every level, it was much more cynical. Making Michael marginally competent gives him an empathetic leg to stand on for the audience. Had they kept Michael exactly like David Brent it probably would have still been hilarious but flamed out around season 2 or 3.