Quoting Piecey.:" That's because you were dual. Things are done a little different for that. In a one service member family, ... [snip!] ... youngins you pop out. The only thing I can think of at the moment that is impacted by the actual number of dependents is COLA. "
maybe things are different now idk. but finance gives you $50-$100 more for each kid where im at. even single military families. a friend of mine went into the military a month after i did. another 3 months after i did. one had 1 child the other had 3. the difference between their LES was $150 and it specifically stated the price for each dependent. finance told them both their information was correct. i know the specifics cuz my chain of command was concerned about it to. i was the squad leader at the time so i was the one to escort them to the finance office.
point is this is just one scenario. there are many different factors involved in how much a soldier gets paid and no two soldiers will get paid exactly the same unless your still and IET soldier. and even then most LES's are different