I don't see many saying the Pulsars, 1 or 2, are the best speaker Joseph makes. Best bang-for-buck perhaps. But almost everyone who has heard both the Pulsars and Perspectives rate the Perspectives as a step up all around.
I've heard the Perspective 1 and 2s, and the Pulsar 1s. Originally I was interested in the Pulsars and demoed them a couple times. They certainly do the JA magic - tone, clarity, huge soundstage, precise imaging, surprisingly big sound and deep bass.
My main thing was that in some tracks I was conscious of a bit of a bass hump or warmth - the one that helps smaller speakers sound bigger than they are. So in deeper male voices for instance I could hear some emphasis. But when we switched to the Perspectives that completely evened out, and they sounded more linear and balanced through those regions. Plus to my ears, instrumental tone got just that bit more sophisticated and rich. That sold me on the Perspectives.
I'd expect this difference to hold up between the Pulsar 2 and Perspective 2, side by side.