I agree with Ysthrall and VintertheElder. Its the old problem about dealing with high arm Beasts and their alphastrikes. Warbeasts have more initialattacks and can buy lots of attacks. Even a Centurion with Arcane Shield isnt enough to take the dmg of a Carnivean, Titan Gladiator or a Mauler. If your list isnt prepared for that sort of stuff you are going to struggle a lot.
I have played a match against one of my friends who is new to WM/Hordes and even with several mistakes his Trolls (Borka, Mauler, Fennblades) were able to beat me whithout difficulties.
What does this mean for me? Should i really avoid funlists even against new players?