Yes, Luna cycle it has no torque sensor. The assist is more like a tailwind. Assist 1 is slow tailwind and assist 9 is very strong tailwind regardless how hard you pedal. It is similar to my 2015 Tekoa. I heard Pedego also works the same.
It is not the same with true torque sensing such as Bosch where it measures your pedal input every milisecond and then responds with proportional torque in percentage depending on your assist level.
It is also different with the cheaper torque sensing that uses strain gauge sensor near the rear hub such as the Izip, easy motion. I have a 2015 Izip Dash with this cheaper torque sensing and I don't like it since it does not feel linear and natural.
The Luna cycle has the best bike components for the money but you got to have some interest in fine tuning the ebike and being a handyman in general. I just got the Giant Stance with BBSHD
(Link Removed - No Longer Exists)
I have to make some reprogramming to the controller since it is not optimized for smooth operation and not optimized for maximum battery range. I have to make my own research and download a driver software so I can connect the bike to my computer. I have a pretty good idea what to change in the program since I have another mid drive (2015 Raleigh Tekoa) as my reference,
I detuned it so it can have maximum battery range but is still powerful enough to match other factory speed pedelecs. The advantage of BBSHD over the Tranzx mid drive is that there is power support even at higher cadence (above 100) so it feels more linear and more natural as opposed to the tranzx where power fades away at about 90 rpm cadence.
The shift cable is not optimally positioned with tight zip ties resulting to sticky and unresponsive shifting. The shift detector sucks (still have shift slamming) so I have to add a brake sensor to disable the motor while shifting. This is a project in progress but I already have a list to do and pretty much know what I am doing. My goal is to make it into a super comfortable pavement speed bike. Things to change like marathon tires, full wrap around fenders, aero bars, sturdy seat mounted rack to isolate my spare battery from road impacts.
http://bgindy.com/product/arkel-randonneur-seat-post-rack-21835.htm