Guys, that's really not what killed us. We played really good defense all night and limited a team with Lebron and Wade and Bosh to 45% shooting. Sure, some of their bad shots improbably went in, and that was the difference between a "really good" defensive night and an "unbelievable" one.
But we shot 43% from the field and they got to the line 14 more times than us. In other words, our offense sucked (and this is coming from a guy that usually feels people don't value defense or defensive players enough).
Expecting our defense to be much better than it was last night is a bit unrealistic. But our offense can be, and has to be, much better if we want to win.