You get an Ace in a A specced viper and he may not be able to win against an Anaconda with a newbie pilot, but he can do a heck of a lot of damage. He's more maneuverable, he can get on the Conda's six and stay there. The turrets will get him eventually, but by that time he's already positioned himself somewhere else and is laying more fire into the 'conda. Maybe not kill him, but the 'conda will have one heck of a repair bill. Might be cheaper just to drop a few tons of cargo.
Is Turrets on a Conda a thing nowadays? A while ago, people were really anti-turret, but I know that they've been improved. Still, pretty much all Condas I've seen use gimbals. Anacondas are pretty manueverable, in most cases that I've seen, agile ships have trouble with constantly staying out of their fire, even with NPC's.
If you want to avoid a repair bill, you can just jump out. No point in taking damage nor dropping cargo.
Without cells large ships will become useless, unless you have been there then you do not appreciate the importance of them. Cells are not some magical device for invulnerability, they have many weaknesses and can be defeated. Too much nerfing has been done already but mark my words, many now calling for their nerfing will in time be calling for their return.
If what you say is true, then that is a serious problem, which I think should be solved first by (temporarily or permamently) removing the SCB's from the game and then changing the parameters of the large ships until they work without problems. If this is true then SCB's are a tumor in this game that runs much deeper than the complaints that I have.
I don't believe you, though. I never saw any complaints about what you speak of among the big ship commanders before SCB's were introduced.