The easiest way to look at your little debate is sealed boxes. A woofer in a small sealed box is going to be extremely peaky with a weak low-end. The output of the same sub in a bigger box will be more flat and have more of a low-end.
If I had my computer I would post a pic of this in winisd.
/end thread jack
/end dumb debate
To be fair, the only reason there ever was a dumb debate is because I was being pushed to say the same exact thing, in different ways, over and over. Keep in mind that I agreed in my original post that a larger volume has the potential to yield the greatest low end extension. Apples were compared to oranges, and now you're comparing bananas with the sealed boxes. Allow me to post some cliffs since this got convoluted so fast.
Apples - Same sub, same tuning frequency, increased net volume = higher peak (my position 100% of the time)
Oranges - Same sub, port size and length staying put, increased net volume = lower peak (was mistakenly assumed to be the position I contested xx% of the time)
Bananas - Same sub, sealed box, increased net volume = lower peak (your position somehow being the rebuttal to my position)
It can't get any clearer than that.
Convenience would have it that Kushy_Dreams posted a screen print that proves exactly this, minus the sealed box:
/thread jack
Peace.