Please don't place any emphasis on the size of the woofer cone. Modern technology (actually since about 1977) will allow the control and output of the woofer to match the parameters of the designer.
The issue with most woofers that come with small home theater systems or sound bars is really no attempt at all to match crossover points, sonic signature, etc. To be more specific, most sound bars and many small HTIB's do not even have crossovers and simply let the speakers roll of naturally.
Jones is using eight amplifiers with built in 6th order crossovers. As I have never worked with anything greater that 4th order, I have no idea what this can do to phase or other sonic parameters. However, based on Jones' prowess and previous designs, I believe that all of this should be a mute subject
If we were talking about sub-woofers, this would be an entirely different subject. To my knowledge, there are no HTIB's or sound bars that come with an actual sub-woofer. All come with woofers. Some of them are good, some bad and some indifferent. I have heard more bad, usually mismatched or not matched at all, than I have the other two categories put together.