Yes, but it's still closer to the PC architecture, the powerPC architecture is also known and there would be at least some similarities. Even the multi-core architecture is closer to the PC implementation, where the multiple cores are pretty similar. With the cell, the main processer, and the multiple smaller processors are different. I suppose there's similarity with other less mainstream processor types with the cell, but much less so than with PowerPC.
Also, the 360 has had two years for people to familiarize themselves with it. In the early days of the 360, some games really didn't even use the multiple cores. Likewise, these poor or delayed ports on the PS3 are the same growing pains that the 360 and PS2 went through. I'll also come right out and say it, but Sony did a poor job early on with their dev kits, and from the reports I've read, it was really, really bad. Thankfully with 1st and 2nd party developers working on actual hardware, it's improved quite a bit as those developers share their methods with other third party companies.
Yeah, it's certainly bad news for Sony when PS3 products get delayed. And yes, it's still a bad thing right here, right now. But tolling the bells for the PS3 because of it? Nope, not going to happen. As I stated above, there's a lot of developers working on PS3s now, including a lot of highly experienced studios making PS3 exclusives thanks to Sony's big push to get more PS3 games. Yes, that's to make up for all the formerly exclusive games they lost.
Part of that prior PS2 exclusivity on many games was that frankly, the PS2 exclusivity was because it was the console out there. I think a lot of developers would have gone multiplatform had the Xbox1 had numbers to justify the porting costs, especially when they got all the profits they needed with the PS2. Yes, Sony's to blame for relying too much on brand name instead of trying to keep developers with good support and deals. But, with the competition from MS, Sony's gotten its act together on the games department.
As for the games we're talking about. Both of these games started as PC games on normal x86 processors with PC developers.