When deciding between the Surface Pro 7 vs the iPad Pro and which is best for Digital Art; it’s important to understand that each device has it’s clear pros and cons. For example, the iPad Pro is great for 2d Art, graphic design, drawing and digital paint. While the Surface Pro is best for those who need a laptop in addition to just a drawing tablet.
When tested, the Apple Pencil 2, Surface Pen, and surface slim pens had similar pressure sensitivity and are very similar regarding drawing and note taking capability (with some slight pros and cons). Which you choose will largely be based on which iOS you prefer and which apps you plan on using the stylus pen for.