It's a silly argument to be honest. Comparing Paula to a modern IBM compatible sound card (be it onboard or not).
Technology from 80's/90's looks prehistoric compared to a "cheap onboard chip" of today.
If you are comparing IBM compatibles of the same generation of the Amiga then that argument makes more sense.
My 486sx 25 with it's sound blaster 16 and later sound blaster AWE 64 with it's onboard RAM was amazing. It saddens me to say it but the AWE 64 card was a Paula killer.
I also refuse to refer to x86 boxes as PC's as to me the Amiga is a personal computer. Even my C64C had personal computer on the label ;-)
In it's day the Amiga was amazing, don't get me wrong I have a weird obsession with Amiga's and like to see what they can still do. Always amazed at the under 5 second boot time to get into Workbench.
But then it's not loading what a modern OS needs to load. Being something like windows is far more complicated. Having said that my Windows 8 laptop boots in around 5-7 seconds, or 2 to 3 from standby.
The one thing the IBM compatible can't do is get me excited like a kid on Christmas morning. I'll always have a soft spot for the Amiga. Hence why I've bought a few of Jen's cards as I would like to see more hardware produced.
Anyway enough from me. Back to reading stuff :-)