The point is, there IS newer technology out there, better and less expensive than the designs that Xantrex, Samlex and other have been selling for the past 10+ years.
That is the hyperbole
Mfg want to save money, if it's cheaper to make something they Will do it !
Getting more power reliably out of a smaller package is Not less expensive
Also the smaller more expensive device is not going to get a lot more power out ANY battery bank than the bigger bulkier older device design
Maybe 91 percent instead of 90 percent
You can't make power out of nothing, you can't get more power than what is stored in the battery bank