Who gives a damn? Terabytes of HD space, gigabytes of RAM, gigabytes of video card RAM.
S100 bus-based IMSAI users with 5mb hard drives, 24k of RAM and paper-tape readers would have viewed Amiga OS 1.3 as effete.
Mac OS 1.0 ran in 128k; the A1000 shipped with 256 (but needed 512mb for apps as a practicality). Was MacOS 4x better than the A1000 then?
1986 Workbench 1.1/1.2 was light years ahead of EVERYTHING this side of a UNIX server. Multitasking, different resolution screens per application to save memory, GUI that worked, 1:1 mapping of file location in GUI and physical location on disk, sophisticated text to speech, full access to Agnus/Paula/Denise features with OS still resident.
Then comes the killer..... IFF standard for sound, images and animation.
THIS is why nothing came close to Amiga in the mid 80s, NOTHING and why A1000 was the only machine in the history of personal/home computing to slaughter all in its path. As for memory it was application data NOT Workbench/Kickstart OS overhead that needed more RAM than inferior rivals, same reason you can't edit a 20 megapixel image on a 512mb Mac/PC. One single 21bit full PAL overscan image Digiview processed down to lo-res HAM from the buffer took more than the maximum RAM of a monochrome Mac costing 200% the RRP of A1000.
1984 Mac OS was barely more sophisticated than C64's GEOS + 1351 mouse and was silent and colourless so 128k was enough for that singletasking Apple fashionista £2500 wank. The 520ST ass raped the original Mac on every level possible (price/performance/speed,colour/OS,max res, appearace) within months...total wipeout....and STs 8mhz CPU is the only aspect it exceeds Amiga.