Head of State, Head of Government

I think everyone here knows the difference between the Head of State and the
Head of Government, so I will just skip over it with the links to Wikipedia for anyone who wants to read up on it. It is quite interesting and there is a lot of variety.

Anyways I think there is a folly in Places, like America, where the Head of State and Head of Government are the same person. I think these presidential republics are flawed. In my previous post, Obama vs. McCain, I talked about how stupid it was that in the middle of all this turmoil in the markets someone took the time to make poll people on who is the better 'football buddy'. But later I had the revelation that, aside from Bush Sr., I think every presidential pick has been the better football buddy.

44th 1960 John F. Kennedy* (Democrat) Richard Nixon (Republican)
45th 1964 Lyndon B. Johnson (Democrat) Barry Goldwater (Republican)
46th 1968 Richard Nixon* (Republican) Hubert Humphrey (Democrat)
47th 1972 Richard Nixon (Republican) George McGovern (Democrat)
48th 1976 Jimmy Carter (Democrat) Gerald Ford (Republican)
49th 1980 Ronald Reagan (Republican) Jimmy Carter (Democrat)
50th 1984 Ronald Reagan (Republican) Walter Mondale (Democrat)
51st 1988 George H. W. Bush (Republican) Michael Dukakis (Democrat)
52nd 1992 Bill Clinton* (Democrat) George H. W. Bush (Republican)
53rd 1996 Bill Clinton* (Democrat) Bob Dole (Republican)
54th 2000 George W. Bush* (Republican) Al Gore† (Democrat)
55th 2004 George W. Bush (Republican) John Kerry (Democrat)

Even when we look at Bush Sr., Dukakis is not all that entertaining a guy. It is the reason that the Republican's have been so successful in making each election a 'Clash of Civilizations' in essence by rallying the far religious right. They have managed to run and win as the Head of State even though the Presidential role as Head of Government seems so much more important.
If America elected a Head of State and Head of Government separately, it is likely that the result would be better.