ENTJs have strengths. ENTPs have strengths. They're not the same strengths. Js are planners by nature. In some sense you could interpret ENTJ to mean "rational people planners". I see a more accurate description of ENTPs as "rational people explorers". It's a different preference, which isn't task-oriented.
It doesn't mean ENTPs are lazy, or ENTJs arn't lazy.
And, it's not just about action, it's about strategic action. To me, strategic action means: an action taken in pursuit of a likely outcome. This is natural ENTJ territory. Which is not to say it's impossible for ENTPs, simply ENTJs are predisposed to thinking this way.
ENTPs tend to focus on enjoying the journey, while ENTJs focus on arriving at the destination.
I feel I'm being fair about this. But, I'll let other board members decide.