For the most part, you are dealing with completely different end users here. Someone buying a multi-million dollar FOH is going to be a qualified engineer with the knowledge to understand very technical spec pages.
While you may understand very technical specifications, the bottom line is that the vast majority of bassist (or guitarist, vocalist, keyboardist...) don't. There is a fine line as a manufacturer of where to draw the line on the specifications. Too much tech speak and you have 95% of the players reading your manual scratching their heads because they can't make heads or tails out of the information.
Speakers are a good example. I would bet that there are probably 5%, maybe 10% tops, of the players here on TB that could make sense of things like T/S specs and frequency charts and make an informed decision on how that speaker will perform. Now, figure in what percentage of the bass market is actually here on TB. So, if a very, very small percent of your customers will actually understand the info, why include it. As a manufacturer of bass equipment, we want our customers buying the gear based on the way it sounds. The bottom line is that highly technical specs mean nothing to the vast majority of the players and even if you are one of the few players that does understand the specs, they still won't tell you if you will actually like the way that product sounds. Your best resource is word of mouth based on the experience of others with the gear you are interested in.