The defense has not rested, yet. As for the fiber evidence, the prosecutor has not identified the source for it. If they can't, a person could reasonably conclude that the fiber is quite common. As for the Danielle's blood on DW's jacket, it could have be deposited there while Danielle was selling the GS cookies. After all, wasn't there testimony about her being scratched by the dog prior to that visit and some mention that Danielle had problems with bloody noses?
Motive allegations have been negated effectively. The porno connection has been refuted. No evidence of DW having been in the VD house; prosecution witnesses that lied at seemingly every turn, the prosecutor not delivering on his promises made during opening arguments, bug evidence virtually eliminates DW, DW was drunk, Barb and Damon apparently were up in the master bedroom for a longer period of time than claimed (per Denise Kemal), Damon got rid of his blue car (fibers?), changing the carpet and painting in Danielle's BR, cleaning the MB carpet before the SDPD could inspect for evidence, partiers lawyering-up, a SDPD that can't seem to write a report that really reflects what witnesses stated, the ignoring of evidence other than that which might implicate DW, and on and on.
As for the prosecution offering explanations during closing, keep in mind that opening and closing arguments are NOT EVIDENCE.
Feldman delivered on all his promises and Dusek delivered on virtually none of his, so who should a reasonable person believe?