Yea, 16% is the
highest for which 4vs2 is guaranteed.
It was posted several times.
Comparison of 16% luck vs 0%:
capture chance:
0% 16%
3vs2 80% 80%
4vs2 100% 100%
5vs3 100% 93%
5vs4 0% 7%
6vs4 60% 60%
7vs4 100% 98%
8vs6 0% 2%
31vs18 100% 98%
31vs20 0% 4%
Ask yourself if you like when your 7vs4 fail, or if you win only thanks to successful 5vs4 or 31vs20. Higher luck % means luck affects game result more, I think it's obvious.
It isnt lower because that would make an easy game even easier.
I doubt change from 16% to 0% affect the difficulty in any significant way, but even if so, it would make games harder imo: lower luck = more even game.