1. Weight - the $200 will be lighter and pack into a smaller size
2 Quality of poles - easily rectifiable with a $15 set to poles at Amazon or store

That's about it, with a $200 tent, you are paying $130 markup for the name on the tent. You can buy a high quality tent like a 3F tent for 1/3rd the price of a name brand with the same exact construction.

Both tents will keep you dry. I did my last tour using an Ozark Trails tent, never had a problem.