Photoshop isn't a dedicated tool of ANY sort - photo editing, painting, 3D modelling, etc. Never said it was.
And yes, it has multiple feature sets. Its drawing/painting feature set is clearly superior to many programs that only possess drawing/painting features, though. So, to use an app that's "dedicated to drawing" means nothing. Photoshop is, and has been for years, the digital drawing program of choice for a vast number of serious digital artists, pro's and hobbyists alike. It has great video card support. It's 64-bit. It uses the newly implemented Mercury Engine. Now what's a "real drawing program" anyway? One that gets the job done. My slightly snide, passing comment may have rubbed you the wrong way, but I think the conclusion here just needs to be - to each his own. Opinions . . . that's all they are.
LET THE SLIME FLOW