Cuz they are both 1/8 scale sized truggies? Just because one rig has cantilever shocks and the other has standard shock placement doesn't mean they arent the same style of truck.
Not sure about the Summit but the E-Revo has always been a popular rig afaik. I think the only reason the discontinued the E-Revo is because they intend the Sledge to be its replacement. Theyre basically the same style of truck. I always wanted an E-Revo. I'm tempted to buy one if they can still...