There are some very thrilling rides at 6 flags. I have to say this is perhaps one of the better ones. I would to rank this much higher than flash or superman. Here is the reasons why. Firstly it looks like another roller coaster. However that deseption puts you initially at ease as you board. Moreover because of its appearance the wait time in line for the ride is relatively small ( about 20 mins as opposed to 2 hours for a 43 second ride on superman !!!). Secondly now that you are at ease the designers of the rides have done a tremendous job in creating convoluted twists and turns and barrel rolls and upside down loops with enough G to bring your sense to the edge!! Simply amazing. The way I would rank 6 flags rides is as follows:

1. Batman. Amazing ride waiting smallest
2. Wonder woman. Superb ride and very thrilling 3 Medusa. Great ride 4 joker 5 flash 6 superman

And then the rest