develop a new Premiere Pro plugin for video Upscaling

Hi All,

I am doing analysis to develop a Premiere Pro plugin for video Upscaling. For video Filters, its mentioned in Premiere Pro sdk guide ver 13.0 that "We strongly recommend using the After Effects SDK to develop effects plug-ins. Most of the effects included in Premiere Pro are After Effects plug-ins. Process a series of video frames with parameters that can be animated over time".

So to develop a Video Filter type plugin using Premiere Pro sdk is dependent on After Effetcts as well? 

I have seen the sdk reference examples of Video Effects and Transition uses also.

If True then whether to chose Premiere Pro sdk or After Effects? 

Thank you.