well sorry for being a bit vague
was a little late when i typed it
anyway
thorns+hyena don't give syngery
but thorns are cheaper(leadership and gold)
than archers(save for the royal one)
and thorns move faster*(personally i hate the human archer it's balls for a level 2 unit)
and for the swordsman the hyena is better I also think hyena is abit cheaper than swordsmen(IIRC) don't pin me on this one
the critical skill the hyena has owns the swordsman big time