I'm yet to ride Xpress, but the Rock n Rollercoaster clones were both more enjoyable than Blue Fire. As is Cheetah Hunt, and practically every other launch coaster I've been on (including Taron, Ka, Baco, Karacho, Anubis, The Mummy).
The launch is just incredibly weak (so weak the trains don't even blur on pictures), it felt like it was going to stall on that first turn and the loop. The turn after the loop was forceless, which surprised me, and so was the rest of the layout. The final inversion was a bit of fun but that was about it. Forceless and uneventful would be my way to describe it.
And please don't talk to me like I'm the only person to have this opinion, on Facebook alone I've seen plenty of people say similar things. It's an over rated coaster in an over rated park IMO.