Please keep in mind the analyser works by simulating the attack a lot of times. If it reports a success chance between 1% and 99%, that means the attack is neither guaranteed to fail, nor guaranteed to succeed; its actual success chance is (with very high likelihood) close to the reported number. If it reports 0% (or 100%) the attack is not actually
guaranteed to fail (or succeed), you should treat it as a very, very small (or large) to succeed.
Assuming you're using a luck modifier smaller than 100% (default is 75%) it
is possible to have guaranteed successes (such as 4vs2 on 16% luck), however there is no possible way to tell the difference between "very high likelihood" and "guarantee" from the analyser.
cause i read some info that the 1 vs 1 template has 16% luck and u have 4vs2 win guaranteed (btw i think they mean 4 sent but anyways not only that was not guaranteed for me but also as i told i sent 1 more and even 2 more and lost
thanks in advance
Yes, it is talking about the number of armies actually sent out to attack,
not the total number of armies on the attacking territory. There are at least two easy ways to remember this. First, a territory with a single army on it cannot launch an attack, yet 1vsX attacks do exist. Second, if that same territory performs two attacks (let's say it has 8 armies on it and launches an attack of 3 armies to one neighbour and an attack of 4 armies to another neighbour), including the extra army which stays on the territory suddenly becomes very confusing.