I always think the Blood Elves are more like the Tolkien Elves.
Night elves are a lot more primal and a part of nature, more secretive and I would say a lot more violent too.
Tyrande and the Malfurasissy and the other druids always present the NE badly imo. NE in WC3 always seemed more the silent, ruthless hunters that could be hiding in the trees around you than the peaceful hippys they come across as now.