If Obama wins more delegates than Clinton in Texas, then he deserves the nomination. Not so much because she lost yet another state and the delegate count is slipping from grasp, but rather because of the disciplined nature of his campaign organization. Unlike the Clinton campaign, the Obama campaign was so well organized in nearly every precinct as to strategically shepherd folks back to the caucus following the primary. If it is true that the Clinton campaign was still hunting for precinct captains in Texas as late as last week, then Obama wins points for his executive prowess.
According to bravenewfilms.org, Marc Andreeson, founder of netscape, talks about some time he spent with Obama over a year ago. Obama told him to assess his executive abilities by examining his campaign. check out this post. The Texas campaign seems to bear him out.