You're comparing 1987 VGA to 1985 Amiga? Not a realistic comparison.

Technology advanced much more rapidly in those days. Similar to how hard drive capacity seemed to double every six months for a while, or how there's a new bleeding edge AI model every three months today.

Also, VGA had 256 colors. The Amiga had 4,096 simultaneously.

Only using the party trick HAM mode though. 32 (plus 32 for the half-bright bit plane) is the mode that most software uses.

Of course in 1987 a Macintosh II with a fully expanded "Toby" framebuffer could not only do 256 colours, it could do it in 640x480 mode where as a PS/2's VGA could only do 16 colours at that resolution. And an Amiga could only do flickervision at that res.

Of course with technology improving all the time, not having a updated chipset circa 1987 that at least had a progressive scan 640x480(ish) is one of those things that really killed the chances of Amiga as a serious computer. They only got that circa 1990, and "Super VGA" was already just about becoming a thing in the PC world (and Microsoft had kinda got round to making a version of Windows that didn't suck by then). I'm not sure if the mythical Ranger had a progressive mode, but it's it does show how Commodore inability to keep the custom chips updated in a timely mannner slowly sunk the system...

Also, VGA had 256 colors. The Amiga had 4,096 simultaneously.

That's the highly special hold-and-modify mode (https://en.wikipedia.org/wiki/Hold-And-Modify). I tried pretty hard to word my comment fairly, remembering the sometimes legendary tenacity of Amiga fans. (Which nowadays includes yours truly.)