Legend in a shape map based on a Value

Hi i have a Shape map with countries, in Legend i have the TYPE (Customer or Supplier), and i have a Switch measure in the color saturation. 

My measures are following:

SUM_SUPPLIER = CALCULATE(SUM(QUANTITY), TYPE = "SUUPLIER")
SUM_CUSTOMER= CALCULATE(SUM(QUANTITY), TYPE = "CUSTOMER")

SWITCH_C_S = 
VAR GREATER = IF(SUM_CUSTOMER>SUM_SUPPLIER,SUM_CUSTOMER,SUM_SUPPLIER)
RETURN
SWITCH(TRUE()
MAX(TYPE) = "CUSTOMER", SUM_CUSTOMER,
MAX(TYPE) = "SUPPLIER", SUM_SUPPLIER,
GREATER)

I also have a slicer in which i have the TYPE (CUSTOMER/SUPPLIER). 

What i want is where nothing is selected in the slicer to see in a country the greatest value (if supplier qty is greater than customer i want to see the this and vice versa) and the country green if is a supplier country and blue if it's a customer country. 

In some cases i see the correct result but in some others no and i cannot understand why.