A lot of people have realised that they are two seperate coasters and the only link between them both is the word Nemesis. To many of us, Nemesis Inferno is an under rated coaster, and deserves a bit more respect among the enthusiast community as it does give a pretty intense ride experience and also an enjoyable one. It may not have the interactions with the fake rock work, but it interacts with the foliage, giving it an entirely different feel to the original.
Inferno sits comfortably at my #3/4 coaster atm, behind Nemesis and the Smiler, but in the summer, when the wheels are hot, I do often have a hard think about it being number one as it is just so damn intense
While Inferno isn't quite as good as Nemesis that is probably more to do with Nemesis' setting and theme than anything else, and it is still one of the best coasters in the country. The 2 coasters do have a lot of similarities and not just because they are the same ride type from the same manufacturer. They do have pretty much all the same elements just in a different order. Both have a vertical Loop, Zero G Roll, 2 corkscrews, an intense helix (Inferno's isn't as intense but you do pull a few G's on that last turn into the brakes).