A PC that is good would be stable regardless of the CPU choice. As to which performs better that's why we run benchmarks.
If you find a PC that fails under load, that rarely is a CPU issue. It's back to its maker for repair or refund.
I need your advice on an issue that i'm completely a novice to,
"the Hardware drag race"
if i were to run two heavy softwares/application simultaneously, lets suppose i need to, in that case if it came to performance and stability would an Intel based processor fair better or an AMD? basically threads vs actual cores. I know nothing does beat an actual core but in terms of the products out there right now, does the i7 fair better than AMD bulldozer when it comes to Multi-tasking with performance.