I hear what you're saying @jake_hunt but i think its far easier to see the differences in a coaster than it is a waterslide.
One has one funnel, the other has three, and two of the three are enclosed. same rafts, same colour scheme, very similar ride experience, ones just a triple repetition of the other.
A cobra roll can be inverted or sit down, launched or chain lift, shuttle or full circuit - each of which gives a very different experience to the rider. They can also be on Vekoma, Intamin, B&M etc - with each manufacturer doing things slightly differently which also contributes to a different experience.
A tornado funnel, apart from the size itself, isn't much different from one to the other. Enclosing them and adding some strobes doesn't really change overall (especially when the enclosure is so bright so as to almost negate the flash lighting in the first place).
I do get what you're saying, and they are, in essence, completely different concepts to the manufacturer and indeed to the park, but from a guest perspective, they look the same, and the ride experience you get from both of them would be very similar.
I mean, you're not going to go and build a Vekoma Boomerang, and a Vekoma Giant Inverted Boomerang side by side in the same park, even though (as I've said above) they'd deliver a different experience... You'd go with one or the other.
You wouldn't build MDMC right next to Jet Rescue - they're the same model, but with some arguable differences, but to the public they would really regard them as pretty much the same ride.
You wouldn't put a Disk'O Coaster next to a GyroSwing #OhShit #Wait #Nevermind...