So the fact I use 16 miners with 16 controllers, does not give a bigger chance as one miner with one controller?
Yeah, the more hashrate is a bigger chance, I know.
But using more miners, does -not even slight- give a bigger chance?
The simple answer is no. Total hash is all that matters.
Complex answer is maybe in some cases, but not your example.
If you are renting from nicehash a number like 5gh which is around 10x l3+ you would be better off with 2 rentals of 2.5gh
The reason in this special case is a miner could be using different firmware/software and it has a block hitting issue.
So one rental of 10gh all from the same guy using shitty firmware/software means you can't win.
Two separate rentals means you have 2 shots at finding a guy with good firmware/software so you chance of winning may be better also may not.
Since in the case of 1 rental 10 good units from 1 guy vs 2 rentals 5 good units and 5 bad units the single rental is better.
In your case your 16 pieces all use same mining firmware and software so it should not matter.