RNRC is 90 seconds long. The coaster height is 80 feet. The length is 3,403 feet, with a top speed of 57mph. The launch is 0-57mph in 2.8 seconds.
EE is just under 3 minutes (2:50). EE's top speed is 50mph, with a height of 112feet, length of 4,424 feet.
Of the two, I find EE more intense. I think part of the intensity comes from the two internal rides pauses, you have time to think about what is coming. RNRC doesn't have any pauses.
It is important to keep your head back against the pad during the launch. As stated above, it only lasts about 3 seconds. The ride is over very quickly, IMO. If RNRC has anything roughly equal to the EE pauses, it is the last part of the queue- when you hear others launching, just like WDW showcases the big Splash drop before you go on it.
Statistics tell an interesting story. The top speeds of both coasters are pretty similar.