How do you figure it's the same deal????? Any of the .21 nitro engines fall within the RULES where brushless and electric does NOT!
With electric you have no flameouts, no blown plugs due to a lean tune among other things. An electric buggy keeps a balanced chassis during a complete run where a nitro burns the fuel out of the tank and the weight front to rear changes. It isn't a matter of power since most nitro .21s are over powered for the avaerge racer anyhow. There is an art to keeping a nitro running for a 45 minute or hour long main and that's what makes it nitro racing. I see no problem running them together for a club race until the electric numbers come up if they ever do to have their own class.