>>39640096Ground is a common coverage but tran you have to consider that tran has 5 quad resists, Bug, Fairy, Grass, Ice and steel. 4 normal resistances Dragon, Flying, Normal, Steel and then 2 immunes in poison, and fire. Then along with this it has a good movepool, trapping and a 600bst.
That's fucking insane and certainly makes up for quad weaknesses even to a common type.
Ferro has 10 resistances, and an immunity and only one other weakness + loads of support moves and good stats.
For contrast Normal Dark has 1 resistance and 2 imunities these types are incomparable.