Quality of scope is a factor for sure, but the issue I had was not the scope. The scope cam adapter sits a tiny bit away from your eyepiece when placed on the scope. The requires the user to use a little bit of zoom to get rid of the black circle on your footage. That little bit of zoom can be 3x - 5x of your optical zoom. That zoom is precious when digiscoping. Once you get into your digital zoom, you start to lose quality. Ultimately you want to have your camera lens as close as physically possible to the eye piece to eliminate wasted zooming.
With my adapter, I can manually place my camer as close as I want. The Tines up adapter has no manual function, you just pop it on and go. The scopecam adapter is awesome, don't get me wrong. I just prefer a manual adjustment for better range and quality.