Canon doesn't do it better. I tried the R5 mode a few times when it came out and it's complete garbage. More like something an intern did as a proof of concept than an actual well implemented feature. The stitching could be done a lot better, but it isn't. Purely a marketing gimmick.
The new R5 Mk II AI upscale is the same, a gimmick that got way to much attention by the press solely for using the word AI.
Canon does use AI features in their R5 AF tracking, and it's really impressive. But Canon calls those features deep learning or other more specific terms.