lol, I get what you're saying, and while my comparison may be a bit over the top, it does still apply.
All are simply battery tubes, but the differences are in the overall quality, fit/finish and appearance. The quality of the switch is important, and some like the Super T-1 have selling points like being all mechanical (no soldering, nothing to fail).
For example, the Prodigy is a fine unit that works very well. Works every bit as good as the Silver Bullet, but when you hold them both you walk away knowing the SB is much higher quality in construction.
The SB has about 2.5mm thick walls of 6061 aluminum (thick and heavy) with one of the best, most positive switches available. The Prodigy is maybe .5mm thick lesser grade aluminum (but also a great switch).
The SB glides when you screw/unscrew it for batt changes, the Prodigy threads are gritty.
Sb can go from 3.7v to 6v by merely changing the battery. The Prodigy can also, but you have to remove the switch and install a different one.
Both are excellent, and this is not to take away from my love of my Prodigy, but there are indeed differences.
You can draw nearly infinite differences between the vast number of
mods available.