This is not a question I am just Generally comparing the two to decide which one is better to Farm.
NPC LVL 8's
A level 8 NPC is the best all round resource Farm because it has 800,000 of all other resources and 8 Mill food But they're are Losses:
Using an Archer rainbow of 96k Arch 1k Work/Warr/Sword/Pike and having Techs at 10 and a hero of 200+ attack with no stars at all my Losses are:
1k work/warr/pike/sword and 6.4k archers
That's Horrific!! Totally Unnecessary archer losses
Now I will be Using a straight 100k warr attack with the same Hero and I get an average 48k Losses but that's nothing if You have a HC 14 Or You could Lower the losses by Upgrading Stars to 5 which would Equal to 34k Losses!
Lvl 10 NPC
Now a Lvl 10 NPC is a bit simpler I suppose so I will be using the same Hero from the lvl 8 attacks With no stars still so Let's get Started.
I will be a Special Rainbow with 2k Warr/Work, 4k scouts and 91990 Archers with 10 RAMS (lNot really needed)
I Lost all the Warrs/Work/Scout/Rams and 5k Archers
So I would say that hit was better than the LVL 8 I attacked.
You cannot send 100k Warr to a 10 so That methods out.
So This is where we Decide if its better to farm 8's or 10's
After 1 Month of Farming 8's( Which I attack 10 a day) with the Rainbow I lose:
1.9 Mill Archers
After 1 Month of Farming with Warriors I Lost
That's 480k Daily!!! Which If you have a HC 14 is nothing since you can draft 600k+ from HC 12's Daily
Now to the 10 which I used that strange combo for and my total losses are for a month:
1.5 Mill archers
1.2 Mill Scouts
3000 Battering Ram
Oh No that's Terrible To retrain these would be a Devastating amount
From a Lvl 8
2.4 Billion Food
From a Lvl 10
5.7 Billion Food
Now you decide which one is better to farm Thank you all