MATLAB cell/Map/Heterogeneous performance

%%%%%%%% FILE SomeHeterogeneousClass.m
classdef SomeHeterogeneousClass < matlab.mixin.Heterogeneous
    properties (Access=public)
        data
     end
     methods (Access=public)
        function this=SomeHeterogeneousClass(i)
            this.data = i;
        end
     end
end


%%%%%%%%% FILE testMaps.m

function testMaps()
    N = 65535;
    timeBegin = tic();
    m=containers.Map('KeyType', 'uint32', 'ValueType', 'uint32');
    for (i = uint32(1:N))
        m(i) = i;
    end
    fprintf('Maps took %.5d seconds.\n', toc(timeBegin));
    whos m
    clear m timeBegin;

    timeBegin = tic();
    m=cell(N,1);
    for (i = uint32(1:N))
        m{i} = i;
    end
    fprintf('Cells took %.5d seconds.\n', toc(timeBegin));
    whos m
    clear m timeBegin;

    timeBegin = tic();
    m=SomeHeterogeneousClass.empty(0,N);
    for (i = uint32(1:N))
        m(i) = SomeHeterogeneousClass(i);
    end
    fprintf('Heterogeneous array took %.5d seconds.\n', toc(timeBegin));
    whos m
end