What is more important: luck or fighting spirit?

"...I was running around the map, gathering luck..."
So it turned out that I cleared the map, and there's one Warlock hero running around with a huge army! So I did this:
I got +16 (plus clover, dove, all-seeing eye, and cards - a full set)
In the Grail and Fountain Castle +14
All troops of one type +1
And in the battle, when the odds were against me, it came in handy!)))
+41 luck, that's no joke! The enemy (Dungeon) had 3 times more troops!!! Well, of course, I used magic, and the hero was level 28, but I still beat him! 95 Black Dragons against 27 of mine, and I won!!! Ha, I vote for luck!!!