> I was referring to a 2.5 or 2.7 G5 running MorphOS be
> similar in raw video playback to an x5000 running
> AmigaOS 4.x with the added on video drivers.

Yes, that's what I've understood.

> I was playing 1080p on my 2.7 and spoke to a friend running
> similar media on his x5000 and the results were similar.

For a very loose definition of "similar", then. The G5 struggles with more demanding codecs, profiles and bitrates of 1080p videos. Also, the G5 CPU remains at maximum load constantly.