It's not inconsistent. We see it habitually. Republican power is oversized in the Senate, House, and arguably the Executive due to structural issues caused by our bicameral system and the cap on representatives. This results in the GOP having a much stronger majority control over all three branches - added also that Republican politicians toe the line more frequently for the radical things they want to push.

It isn't an objective matter of how powerful or effective the Executive branch is, but also the power structures in the party in control. It is not a false dichotomy to think that Democrats struggle to pass impactful changes while on power, but the Republicans are able to do that more effectively while in power.