The reason Miranda had even sent so many planes was that she had expected 90% of them to get destroyed before being able to drop their load. After all, she had done nothing to hide their deployment, certain the Gods would at least strike a few of them down, or some defensive force of the continent would do so.
This was why she had switched from normal missiles to warheads, as missiles alone wouldn't do enough damage if most of the planes had been culled, but one or two warheads at the right place could sort everything out.
However, the Gods had prepared no real defenses, rather opting to see what these metal birds could do first. Only Ares had attempted to stop them, but to Miranda's shock, it turned out Source Energy-powered weapons were enough to kill a God's incarnation!