Is upscaling worth it? If one has no other options, then certainly. But otherwise, it is worth comparing to actual high-resolution content.
Below is a color upscaling using our improved upscaler, and the same part of the test image from the original high-resolution photo. Aside from sharp edges, the original content is clearly more detailed. This is not surprising since even the best upscaler only has one-fourth the number of pixels to use.