Makin the defender change as you arrive makes it impossible for the guy to have the chance to kill even 1 ogrov.
Why is it that, in this argument, the good strategic principles of scouting and being one step ahead of your enemy go out the window. If he's totally unprepared for my counter, then that's his problem for not keeping an eye out (and using some common sense that if my bomber assualt just failed, therefore my next assualt will be composed of fighter resistant units). Why should the defender even be able to kill 1 Orgov? Does that make things FAIR? Hate to say it, but if your defenses were rolled over by a well assembled enemy fleet, that's your own fault. I, as the attacker, should ideally not loose any units with a good strategy. Keeping light armour for Orgovs/Ajudicators just so the defender has a chance to kill a few, rather than loosing outright due to an ill-prepared defensive line aka a bad strategy (can you see what I'm saying here?) is a strange argument when dealing with a strategy game.
Again you will lose a few ships but once you have supressed the fighters battle is yours.
If the battle was between fighters and flak+assault cruisers, then yes, the battle is yours. If this battle involves an enemy fleet (like it should) then you have problems. Even if you kill the fighters, the additional damage those fighters do before going down due to being effective vs. light armour will allow the enemy fleet to FF your assault cruisers into oblivion. With a heavier armour type, switching to assault cruisers would be an intelligent move to nullify the opponent's advantage, rather than a gamble that the opponent doesn't know how to micro-manage his fighters and just clean up with his fleet, (or he has repulse, in which case the flak frigates get slapped away and the assault cruisers are then minced at lesiure by the fighters, at least with different armour, they might do some meaningful damage, but this is a specific situation), it means his fleet is forced to fight intelligently to compensate for the advantage he no longer has; read, he has to use a considerably different strategy, which is what building a counter is supposed to do in the first place.
I still say put this up there. Maybe that will solve the argument once and for all.