So is there a difference between Camping and Bushcraft?
In my oppinion yes, very definitely.
Camping is actually doing something - you are away from a home (as we know it in the UK anyway), living under some form of temporary shelter etc.
Bushcraft (or backwoodsmanship) is a set of tools (knowledge) that allows you to live away from 'Western' standards of civilisation but also to carry out tasks in a simple but effective way. So you apply bushcraft when you are camping but you could apply it when you are walking the dog, digging the veg patch, or even in the office! The better you are at applying that knowledge in the outdoors the more comfortable you will be.
As to the need for expensive gear - well clearly our forefathers were better at this without it than we are with it so it's not necessary. But owning gear isn't bushcarft; using it properly and effectively is.
Just my twopence worth!
Cheers,
Broch