The fact is, something like 10% of the bitcoin network jumped over to mine it. I don't think they were expecting that, and I don't think any coin could support that much right away without any hiccups. (Have any other alts had that much power at launch and managed fine?)
No, dozens of other coins have experienced similar growth with no problems and many of them included new/experimental features unlike paycoin.
Source, please? Or at least specifics so I can look it up myself? I'm not particularly interested in looking up 200 coins right now to figure out which one you're talking about.