I was checking out a post on Flickr where someone was asking about doing his second wedding shoot with a Canon PowerShot SX110 - a decent point and shoot but a point and shoot nonetheless. There were some posts gently and not so gently suggesting that he not even attempt a wedding with the camera.
Switch over to yours truly. I am doing my second wedding shoot this Saturday and I booked a D700, a 24-70 f/2.8 and a 70-200 f/2.8 about 6 weeks ago for the event. I checked out the venue last weekend and it is dark but the ambient light is really cool. I am still playing around with the idea of using some flash but the nice thing about the D700 - crank that ISO up and the pics will still look nice. I have my D90 as a second body and my 50 mm f/1.8 just in case. It might not be my first choice but it'll definitely do the job if I have problems with either the body or the lens I am renting.
Now we know that it isn't the gear that makes the photograph. The person posting didn't have a lot of shots in his portfolio so I can't comment on his ability. There is however a point where gear can either help you achieve your creative vision or prevent you from realizing it. There is a reason why high end professional spend thousands on their gear. Every lens, camera or piece of equipment has its limitations and the better photographer you are the more you can push those limits.
And the big reason to get higher end gear? Fortune favors the prepared.