I agree. You can go to just about any sight that sells ammo. I.e. Go to sportsmansguide.com ; go to the ammo section; point on the 9x18 ammo and click on silver bear fmj or hp, or any of the brands. Just about all of them will list the weight, velocity, and energy. The confusing part is that if it was a longer barrel; e.g. 7" instead of 3"; the velocity would/could increase. Thus increasing the delivered energy. But when both the fmj and the hp state 1000 fps and the weight on both is 94 grain; and the energy for one is 204 ft/lbs and the other is 255 ft/lbs; that get's confusing.
I understand that expansion in itself doesn't affect energy. However; we live in a virtual world. Just like horsepower used to be measured at the rear, it is measured differently now. And a 150 hp motor today can have more effective power than a 200 hp motor 40 years ago. Well, maybe it's possible that the "Virtual" energy is different. I.e. an expanded 94 grain hp bullet has the virtual energy of a 115 grain fmj. This is the only think I can think of; other than straight out false advertising. Anyway, most sites that sell ammo list the velocity and energy. Sportsmansguide.com is very good at listing the info.