We are looking at this from a photographers point of view, we have studied the work around us and seen thousands of wedding photos.
From the Bride & Groom's perspective, price is very often the consideration, they might ask friends & family how much they paid to get an idea of what is to be expected and adjust from there.
Communication is also the big consideration, do you know that most people book the first photographer that replies? They pick out three or four photographers email them all on the same evening and wait for the replies.
I have booked a few fancier weddings than my price range would suggest for that very reason.
The first ten weddings I booked were from the pictures of one free wedding, those pictures were awful compared to the pictures those clients received, and this season has already proved even better.
So yes experience, is a huge factor, experience also feeds creativity, and confidence in abilities results in better photos.
But I am pretty sure that most people invest in better gear as they get better too, while that doesn't give you creative vision, it might enable you to get the shot you saw but couldn't get, for example you might of been in an extremely dark church and with your rebel camera and consumer telephoto been at f5.6 at 200mm iso 12800 1/15 of a second, and flash had been banned, a f2.8 lens and a camera sensor capable of a usable 12800 would of been the better choice of equipment. A 135mm f2 might of sacrificed some focal length for shutter speed if you needed it.
Gear solves technical issues as well, normally it's after you have run into a problem that you can justify the new piece of kit.
If you are smart you think ahead, check out the venues, rent potential problem solvers, if they were useful buy the problem solvers, you can discover there creative applications later. Or you can tell your clients that if you can't use flash indoors that portion of the day won't be able to be photographed, and see how many still book you.
People ask questions about gear because they don't want to run into problems in the first place because it would be at the expense of a client.