Winegasman, it's a lot cheaper to fudge the low end than high end. As one dealer told me, bass is related to cabinet size. Forget spec B.S. You are not going to get Quality, low distortion bass from a small speaker cabinet.
From my subjective experience, you don't get full range from any two-way regardless of what the measurements say. I think you simply need to move a lot of air for bass to have real impact. It may be measurable but that doesn't mean it's "there".
Second, again from my subjective experience, active speakers are way better at producing punchy, powerful bass. Just listen to Mackie's little 824 two-way. Way better than any passive two way I've ever heard.
I heard ATC active 100's with a claimed bass only in the mid 30's. Again, active bass drivers but a three way design in a good-sized cabinet. After hearing these I thought, WOW I have never heard bass like this. True 30 hz bass is, as William Shatner would say: "Big, real big".