I'm not necessarily saying I would prefer Clinton to have been the nominee. I am saying I'm pretty thoroughly underwhelmed by Obama. Most of the last few months have been PR stunts, attempts to fight back against McCain's ads, etc. It's all defense, no offense. Add to that his series of flip flops on things ranging from FISA to declining public funding, and it's apparent that many of the negatives attributed to Clinton in fact apply to him as well.
This may not have anything to do with what you're saying, but if Hillary Clinton had won the nomination narrowly and Barack Obama were giving an endorsement speech, the talk about "buyer's remorse" and squandered potential for a victory would have been ten times louder.