I think a bigger reason is that EU is/was largely tied to one mod and thus not subject to the same sort of power creep forces that RF - and anything else forced as a standard - would be.An interesting point. If I think about it, that would have happened to BC power, but probably wouldn't have happened to IC2 power, because the value of IC2 power is tied to the built-in storage blocks and transformers.
...To be fair, I cannot help but be somewhat pleased at this idea that enforced standards, ultimately, become self-defeating.