The rest are somehow worse.
Don't they have the weakest units at levels 1-4? ... you can even build Dendroids for the final stage or defense in a Castle.
The only difficulty is building Pegasi, but you can find 5 crystals and a mine. And in terms of strength, they are very strong, and the Pegasi silence the opponent's mana.
Dwarfs and ambush units exist, and they have resistance + all rangers are subconsciously resistant. The speed of the Losh is not weak... and the battle will most likely take place on their native terrain - which is advantageous.
One drawback is that their own mages are not super strong in terms of magic power, but this is not critical.