Kallisto is just using modern tech except shrinking it and changing it a little. I'm sure if I engaged his little fleet of little destroyers and mini-carriers, I'd win easily... Plus who said there can't be any kamikazes if it is a desperate win or die?
Yeah well this is in present-day technology. If you want i can start making space lasers and planet-destroying missiles.
Also minicarriers have an advantage: if you kamikaze against a nimitz-class carrier and succeed, that's $4.5 billion down the hole. Not quite with smaller carriers.
Also kamikaze's are pretty obsolete. A missile would work better.
And just because the ship is the same shape does not mean it is same technology. Carriers have looked the same, shapewise for decades and there is not much of a reason for that to change.