The advantage of the AGA computers is that they run a few pixel art programs that can take advantage of the 256 colors offered, but yeah, they were cheaply put together units and they could not hold up with SVGA on the PC side. Ignoring the whole cap thing, the A1200 and A4000 both suffer from power supply problems on their +5V rail pretty much by design, (the A3000 does too, but it's not an AGA) and the A1200 is a super moody computer because Commodore equipped them with a mix of chipset revisions that all had their particularities working with each other and had some bugs. People find complicated to locate bugs and problematic interactions to this day. The OCS/ECS systems on the other side were rock solid. I especially love the A2000. Such an expandable and nicely built machine, only system where Commodore also didn't fuck up the power layout.
It's a pity the graphics cards in Amigas always have been a hack. Both on the hardware and software side. Besides the early Retina, (which was slow as fuck, some NCR chip) all graphics cards on the Amiga have a PC chip with a PCI/ISA bus implemented in GALs/PALs on the card to communicate with the Zorro Bus which never saw native graphics chip implementations as the "professional" Amigas had no market share for companies being interested in doing chips for Zorro. It was slow, it was prone to error and on the software side, P96 and Cybergraphix (or whatever it was called, I barely remember) also had their particularities. No program written for the chipsets (both AGA and OCS/ECS) could properly support the additional colors these cards had to offer. It's a huge pity.
I have some video card here for the big box Amigas (not graphics card, video card) that has an in-hardware MPEG decoder. Guranteed botnet free, I guess. It's purpose is to be connected to a TV via SVIDEO to watch movies from harddrive. That thing barely sold. I wouldn't be suriprised if there were only a few dozen working ones left. Such cards also existed for PCs but were much more plentiful there.
Some day I'm gonna reactivate my A2000, I have both a Blizzard 2060 (with late revision 060) and that Commodore 030 acceleration card for it.