I do not fly the ERJ, but I'm willing to bet depending on which airline you were on, that they utilize FLEX takeoff's. These are reduced power takeoff parameters which require less thrust and longer takeoff rolls to preserve engine life. It could be that the ERJ does have a low power engine take-off, but I can tell you that in the CRJ our FLEX reduced thrust TO
is MUCH less than the full power version. There is a HUGE difference in feeling between the two. EX: You will think to yourself.....wow that is really a lot of thrust on the full power takeoff and on the other you will think: is that enough to get off the ground! Hope that helps.