There are definitely ways that the Clinton campaign has annoyed me, but the "win Super Tuesday and it's over" strategy really was a pretty good one and it almost worked. Politics is binary and there's big tendency to overstate the genius of the winners and lament the bumbling of the losers. Now the basic Clinton campaign strategy wasn't necessarily one which spoke to me, but the point of the campaign isn't to win me over it's to... win.
Where they seemingly went wrong was remaining wedded to the momentum strategy even after they had lost the momentum. Whether this was just stupidity or largely due to money issues I don't know, but not competing in a bunch of states let Obama get a bunch of big wins while she had been getting much smaller wins.