Size was clearly a factor as Kenya lost 46-13 to Namibia in Windhoek. The Namibian forwards always look bigger and more conditioned.
Secondly, Namibia are busy preparing for the 2015 rugby world cup which means the players have been training together for a long time unlike Kenya which only assembles a few days before any match. And as always, Africa cup matches always favour the home team because amateaur players often face travel restrictions from their employers.