lol, comparing raw photography, should have used xperia 5II and new S21Ultra. Xperia got best colors also S21 got 12bit raws.
Actually multi stacked hdr raws can be done with gcam - ported google camera.
Though simple raw loses a lot if compared to 12 of stacked frames when shooting jpeg on some brands, if auto output is bad, raws can solve this.
Do not know about stacked raws on full size cameras, or any smart features like changed AI background.
In phones you also have something you don't on mirrorless, also what most people can only dream about considering price, its hi res 64mp (I mean those with regular bayer) and 8K. Seeing detail difference 4K/8K, its crazy what you get.
PS: Some brands got similar results on jpegs and without effort, some like sony got better edited raws, but output from like iphone vs one from sony - its heaven and hell, colors are way more realistic from xperia. So raws are not everything, hw or used sw are also important.