It's been my go-to for the last year or so while I've been getting back to hit. I haven't hit with the PD enough to make a very good comparison, so get back to me in a week or two for a more thorough comparison.
So far, even though it feels remarkably solid given its weight, the Clash is definitely not as solid as the PD. It's really just a matter of weight - the Clash, if you added a bit of lead, might feel just as stable. In stock form, though, the Clash doesn't hold up very well against heavier hitters. So far, I maybe have an easier time generating pace against weak hitters with the Clash, but that is almost definitely because I'm just more familiar with it. Against a heavier hitter I had a much easier time redirecting pace with the PD. I could also get way more depth with the PD.
Spin is kind of a different situation - The clash is an absolute spin monster. Without the additional mass, though, there's only so much you can do with that spin. so far I have had trouble producing as much spin with the PD, but this might just be because of the strings. My next string job will be full poly so we'll see if that fixes the problem. For now, the launch angle is so low on the PD that I was sometimes putting balls in the net that I normally put about a foot over with the Clash or the Blades.
The feel is also incredibly different, too - you can really feel the flexibility in the clash, and it is definitely a lot more comfortable if you have any kind of arm problems.
Once again, let me get back to you on this in a week or two. I'm sure I'll have a better idea of what to say then.
Edit: the additional spin makes the Clash a little easier to control - plus it's just lighter so you can't launch the ball quite so far. I think the flexibility also translates to slightly more control.