personally I've always considered ferrari to be in a different league than porsche and never really took to comparing them.
its kinda like if you cant be a cheerleader, you join the dance team...if you cant afford a ferrari, you get a porsche. porsches straddle the line between "exotic" and "nice/high performance" car in the same way that corvettes do(before you jump down my throat, no i dont think vettes are on as high a prestige level as porsches are, but same ball park). When im driving around and i see a vette, or a porsche i never stop the conversation to say "check out that car" but if i see a ferrari I almost always say "check out that ferrari" and everyone goes "ooo-ahhh" and the like.
i guess to me, porsches dont elicit the same "ooo's and ahhs" like ferraris do and I think that speaks a lot about the comparison on a non performance level.
A woman goes to the doctor to figure out why she is having breathing problems...The doctor tells her she is overweight. She says she wants a second opinion...the doctor says, "your ugly".