Editing in Pages

How Pages is implemented on iOS or iPadOS is inherently different than macOS due to differing platform capabilities and separate development frameworks. You can help improve the disparity by sending direct feedback to the Pages product team and requesting feature parity with contrast, sharpness, noise, etc. Are these missing too on an iPad Pro?

The Apple product teams do not participate here as these are user-supported public communities, so that feedback link is the only means to reach them.

Define what you mean by image edit? The implementation of Pages for Mac is different than that for iPadOS and what you want to do may or may not be possible in iPadOS.