It will make different if the encoding compression is different. Not all 1080p streams are equal. A 1080p FHD blueray is around 30mbps. I've read 20mbps h264 being almost indistinguishable from 30mbps blueray. In my own personal test using some Starwards bluerays, a 10mbps looks pretty good compared to the blueray. On YouTube I've seen anywhere from 2-4mbps being used for 1080p and 7+ used for 4k.

A 4k or 8k stream is coming into your computer at 10+mbps and being downsampled to 1080p can very contain more information than a lower quality 1080p stream coming into your computer at 4mbps even after downsampling.