I have used some Capture fixtures of lights I have lying around to check what they look like in Capture and in reality. It seems the cheaper the light the further away from its true representation it is.

I have a few really cheap QTX MW-6 moving head wash lights, the real light shows a faded wash on my ceiling, however when I use the Capture MW-6, it shows a very bright and strong beam more on par with a very expensive and powerful spotlight not a cheap 30W LED wash, Iv found this is the case with a few LED's. 
Are all the fixtures setup to be this way? is the user then expected to adjust the settings to get something similar to the real thing?