OF COURSE NOT .. this shiny new MBP is just get a headstart
New upcoming iMac will eat new MBP alive, that's obvious ... but iMac is different beast for different purpose. It was designed to replace your home desktop PC (which all of you should try to), while MBP is designed for portability and decent performance compared to desktop from the same generation
I have an approach for everything i buy .. always GO BIG ... for the same technology, bigger is always better, and that's undeniable. But that's just me, other people has different needs