Stirring up a hornets nest

I like to study the NHRA blueprint spec sheet for stock and superstock classes and their factoring system.
They factored
the 273 -4bbl at 235hp, The 2bbls at 180/190
all 318s,2 or 4bbls, from 67 to76 as having 225 to 230hp
the HC340-4s at 300/310hp, the LC 340-4s at 270
the HC340TQ at 325hp which is about the same as the 6bbls
the HC360-4s at 270 to 290
the LC360-4s at 250 to 265

Now compare th 273-2s to the teeners. They had the same cams, the same ports and valves and about the same C/Rs. So basically the 2bbl-teener is a big-bore 273-2, with an extra 40 to 50 hp. And a mountain of torque.If you do the math; thats 1 hp for each cubic inch. You see where this is going, right?
Well if you pump up the C/R of the lowly teener to match the 273, and give it the 273 cam, what might you expect. Ima gonna guess the same extra 45 hp. So doing that math, the teener becomes 280 hp.
So now, lets work the 340-4bbl backwards. at 22 cubes bigger,and 300hp, I'd expect no less than 22 hp difference to that HC teener, when the 340 heads and cam go into it. Doing the math, I'd be expecting 300 less 22 =278
So now we have a problem. You can't have a HC-teener, with a 273 cam, and rinky-dink heads,equal a HC-Teener with a 340 cam and heads. So obviously there is some fudging going on in the numbers.
So I did a little digging, and this is what I found. The HC273-4 is factored at .86hp/cid, the teener at just.72hp/cid,the 340-4 at .88hp/cid, and the 360-4 at .79hp/cid
What'can we learn from this?
What I see is HC engines make quite a bit more specific output than LCs and obviously, 4bbls make more than 2bbs.
So what can one really expect from a HC-318-4 ? Ima guessing about .87 hp; and that math is 277hp
So while you're there, how 'bout a HC360-4? Ima guessing .89 hp/cid or 320hp.

So lets line the horsepowers up; 235--277--300--320
And let's look at the differences.......42---22----20
Now if I just had torque numbers to screw around with................