It might depend on the overall mood of the show. In other words, perhaps for the sake of Greed, Woolery may have been instructed to come across as more authoratative, less approachable to go more for drama than personality - the "man in control" with millions at stake. Lingo probably needs some tension lessened on the show to help the contestants think faster and clearly and make things seem "fun" to the home viewer. No matter what the budget, if a producer has a set tone for the overall show in mind, he/she will try to have the talent fit the mood. Personally, I think Mark Walberg is doing a good job of treating a cheap show like one with a better budget. He isn't slacking.