This was/is inspired by a question in the comments yesterday when AOMEI Backupper was the GOTD. Backupper is a good app BTW -- as I've said in the past, I standardized around Macrium Reflect 7 or 8 years ago when Macrium Reflect was the only backup app that had a USB stick that would boot with all of our devices. That may have changed by now, but I've never had reason to find out. [I do have Backupper installed in a VM, so I can always work off the USB stick or WinPE version if Macrium Reflect ever fails for some reason.]
File backup apps are often basically like archiving a list of files & folders in a ZIP file, and their performance could possibly vary from one brand to the next, depending on the hardware you're using. Image backup apps OTOH copy the raw data stored on a hard disk/SSD. With a full backup you copy a single partition or all partitions on a drive, without worrying about specific files & folders, so the software you use is *usually* irrelevant when it comes to speed -- that all depends on how fast it can read from the source drive & write to the target drive, which is 100% hardware. The word *Usually* comes into play with a feature included in Macrium Reflect [free & paid], direct disk i/o, that *may* also be available in some other brands. [I don't know if it is or not, but it's maybe something to check for if you're comparison shopping.] Macrium Reflect checks if the drive is being used for anything else besides the backup, and if it is not, writes directly to storage bypassing Windows caching, which can speed things up. There's a Disk Write Performance dialog under the Backup menu where you can recheck or set things manually.
That said, Macrium Reflect & several other brands of image backup software offer incremental image backups etc., e.g. analyzing files to see what's changed & only backup the new stuff. Your performance can vary with these sorts of backups depending on the brand of software & the hardware you're using plus the software you've got installed, e.g. security software.