Yes huge difference between T5 an T6. Got Ewoks to do about 50% damage on the captain in T5. Guild Leader did about 75%. Didn't get credit because of a client restart. T6 was able to use teebo and Elder twice and got about 400k each time. Pigs resist more in T6.
IMO Can do the most in T5 phase 1 with full Ewoks and RG.
Scout TM reduction helps when they resist teebo, RG to stun minions and speed down captain. Elder to remove death mark and China to get an extra attack out of stealthed teebo and scout.