probably because forest hunters where easyer to find in the celtic kingdoms then in the hellenic one´s
vartan the fact that the keltic society had less disparities and thus those of lower ranks where better fed and their inherited lifestyle made them better suited for warfare makes keltois better warriors then the hellenes so they ate more meat had more muscle but they weren´t stronger ? those who ate meat in the hellenic world weren´t strong they where fat ...
also keltois where better at melee 1 vs 1 if not for much then their better quality swords and shorter more easily usable shields made precisely for hand to hand combat while the hellenic warrior ethos was mainly based on cooperation
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