Different auction house techniques

i have been watching the different auctions on Television and I find the auction techniques interesting. I notice Barrett Jackson and Mecum use that old school fast auction talk (which by the way I never understand) and then I see Bonham and Sotheby's using more of a laid back approach. I wonder is one technique better than the other? Does the auction technique depend on what kind of car it is. I also notice Mecum is always trying to get the seller to drop the reserve. Do they have better results by doing this? I find the whole auction scene very interesting. It is also confusing at times.