@Moto,
Well sure there's good low budget stuff, and lousy big budget stuff. But those are more likely to be exceptions rather than rules.
"New" actors and directors aren't necessarily so new, BTW. Consider Haley Joel Osment, so terrific in The Sixth Sense. He was also in Forrest Gump before that. He was a kid but he still had relevant experience.
Money can buy big explosions, fancy sets, great costumes, etc. No argument there. And films in particular which don't have big budgets have got to get creative. But set dressers (for example) don't always have the time or imagination to do a wonderful job.
You know which film has just about the perfect sets? Office Space. Everything from the office to Peter's apartment to the fast food restaurant lines up perfectly. And it was probably pretty cheap to do the settings. After all, there are hundreds of office buildings where they could have filmed. The restaurant was probably already there, just redecorated. Peter's furniture probably came from Ikea.
You'll see movies saving money by poorly lighting their effects sequences (rain, fog, twilight, you name it) and giving every vendor a screen credit (which is why you see the catering company credited).
It comes back to money and creativity.
BTW, I'm not in the business .