Ok I get it! I have been living in New England and Pumpkin Pie is favored over Sweet Potato Pie in most of the NorthEast.

the screenshot and LINK 
https://www.verybestbaking
.com/recipes/18470/
libbys-famous-pumpkin-pie/

Ok  I get it!  I have been living in New England  and Pumpkin Pie is favored over Sweet Potato Pie
in most of the North East. 
 I figured it out- one is SWEET  and the other is Not  So Sweet.
 All my friends and cousins  that can bake  prefer the Sweet Potato Pie over the Pumpkin Pie and say I am no Cook.  OK

I am not even a foodie anymore.  I promise to stop being a foodie, and become an advocate for people having food to eat instead. Margo the foodie  is   done.

So  in the spirit of having food to eat- if you only have  for a can of Libby's Pumpkin Pie mix and a couple of premixed ready- to -use pie crusts ... can we all agree that food is fuel?

A side by side comparison of the nutritional value of Pumpkin Pie vs Sweet Potato Pie
 Pumpkin Pie  from the can                                                                      
including what the FDA requires on labels   should be a good place to start except  the pumpkin pie haters tell me that they do not use sweet potatoes from a can ... They cook actual sweet potatoes and puree them  and start about 2 days ahead... Well if you go to that level of course your pie will taste amazing...                                                                

This is what the FDA requires on the label:
vitamin A
vitamin C 
calcium
 and iron.
 Once you add the butter  
and sugar   like it says on the label...

https://youtu.be/9U8ntWvYkeE

it is not diabetic friendly, but it is pie- see the video 

In both the pumpkin pie and sweet potatoe pie  
The spices are 0 calories                                                                                            
 in the red/yellow family of spices :
cinnamon
 nutmeg
  ginger
 cloves 
 allspice 
 Usually brown sugar and/or  white sugar are added
The evaporated milk should be from a BPA free can
 The crust should be relatively free of preservatives
like sodium benzoate.

But if you do not read the Labels - your quick pie
may taste like it is full of preservatives  since it is
not from scratch the way your ancestors had to do it

For the health conscious - the Doctor Approved version  of Pumpkin Pie requires you making it from scratch  to control the level of fat, sugar  and non organic preservatives and sources
https://www.doctorshealthpress.com/food-and-nutrition-articles/pumpkin-pie-benefits-is-your-favorite-thanksgiving-dessert-healthy/