The Republican Diet (analogy)

You should be 165 pounds and have blood pressure of 120/80.  We put you on the Republican diet.  You put on 100 pounds in eight years.  Your blood pressure went up to 190/100.  Then we put you on the Democratic diet.  In four years, you have lost 70 pounds and your blood pressure has dropped to 140/86.  And the Republicans say, "See.  You're still overweight and your blood pressure is not back to normal.  Obviously the Democratic diet has failed you.   The only logical thing to do is to return to our Republican diet."   Anyone else see a problem with this "logic"?