I'm not sure that's possible. Even if Shepard sat down and had some beers with Harbinger and talked it all out, I'd at least be able to cling to a Kirk parallel and feel sort of okay.
Jack has gone to gauze instead leather straps. She's also grown a ponytail and some hair. And hilariously one of her kids mocks her old "I WILL DESTROY YOU".
A dreadnaught takes thousands of crew (freespace logic), no way that compares to a bunch of guys holding assault rifles; no matter how good they are.
ME ships have very small crews. When a Turian frigate goes down while you're on Palaven's moon, the characters comment that she had maybe fifty people aboard. Dreadnaught crew is well under a thousand.
Another thing to remember is that the Reapers have proved, repeatedly, and in ugly fashion, their complete superiority in space warfare. The greatest victories against the Reapers have been won by people on the ground. You even proved it was possible to get inside a Reaper and severely damage it on foot. A cruiser or even a flotilla of them will struggle to escape alive from one capital-class Reaper. 20 guys on foot might be able cripple or destroy it if the Kodiak gets close enough.