The bottom end is the same. They are the same drivers.
The Super-V is super fun. That speaker does everything really well. Vocals are good, and dynamics are great. Sensitivity is high at 97db as well. This speaker makes you want to hear your whole collection and crank stuff up.
The NX-Otica is a more accurate speaker. The detail levels are higher and they are cleaner overall. Drivers are also physically aligned on both sides so a more even room response and decay. Sensitivity is lower at 93.5db and dynamics are not quite as high. But they are more transparent and image placement is spooky good.
Both very good, but very different speakers.