That's not really accurate. Not getting to a ball at 3B is the same as not getting to ball in RF. It affects your range factor, but you probably aren't getting an error unless it goes completely under your glove or something. But in both cases why you would get an error would be similar.
Booting a ball in the IF and booting a ball in the OF are also similar in that those are what you get an error for. The one advantage the 3B gets is sometimes errors hide in things like botched double plays where you can get one out, but not the two you should have got, as we have seen many times this year.
The other thing of note is that what Burger and Vaughn are doing defensively isn't really relevant to each other,because they aren't in competition with each other for a defensive position.