What is a better way to break a rope, two kids pulling from opposite ends, like tug of war, OR , attaching one end of the rope to a wall and then the two kids pulling together.

I think the second one may be better, as in that case, if the kids apply $F_1$ and $F_2$ force, the tension turns out to be $F_1+F_2$ , but in the first case, it is $|F_1-F_2|$.

I am not sure if this correct, my explanation seems very "weird" to me, and as I am just starting physics (this was a problem in HRK), I can't yet judge my answers by myself, so I would really appreciate it is someone could please say if my explanation is correct, and if not, then what the correct explanation is.