And the top squad is one of the cheapest and earliest hitting squads....
To deploy yes, but as for upkeep they are currently one of the more expensive ones to maintain at 35 MP to reinforce.
AFAIK they are also not the top squad, Obers are. By quite a margin. 2 tests is way too few to properly gauge this as JLI are completely depending on RNG to drop enemy models quickly while units like Obers do steady damage over time.
This test is completely bonkers anyway because of the way testing was done. There is no way to make a proper comparison when you don't test all entries under the exact same circumstances. All these squads should face the same enemy squad, not each other, to get reliable results. Then compare things like time it took to kill enemy squad.