Can't speak to the Red devil haven't done one yet.. The cool rail, on the other hand, is not terribly stratty out of the box. It's clear and cleaner, however it's got some pretty massive output so I would perhaps compare it to a jazz neck pickup.
However, I parallel cool rails a lot of the time, and in that situation it becomes far more strat-like.
So my guess, not having used the Red devil, is that either one could develop a relatively standard strat tone, the cool rail could go brighter and the Red devil would be more mid-like...