Practically, the amount of search time saved by the simpler implementation is less than 75 percent, for two reasons:
The different access methods are not equivalent in terms of usability. Each has its own properties that make it suitable to certain situations.
Although the single-access method provides fewer access points, applying it does not reduce the effective search time in situations where the users do not know which access method is applicable to the function. Therefore, the users need to go through all the access methods in order to find the one that they need.
The first point implies that in this example the more complex solution has advantages over the simpler solution.
The second point implies that in the example the advantages of simplicity are not so obvious.
Updated on 28 Feb 2016.