The standards always going to be higher in the PDC worlds, the vast majority of the players there are full time pros, not part-time county players. Most of the BDO players are making their tv debuts with the nerves etc...associated with that. There are only two tv tournaments at the mo and it means they aren't used to playing on the grand stage as often.
Having said that, some pro's, the likes of Ross Montgomery, have had the exposure and can't seem to handle the pressure. Even Gary Anderson was one of the players with a shocking tv record till he crossed the divide so we can't be too harsh on them. At the end of the day though if your good enough you should be able to take it in your stride and do well.
The main point is if you think its utter crap, don't watch it. There have been some good games this week even if the averages are not great. Hate to sound like the bbc commentators but averages aren't everything.