Not sure why there is any criticism of Leinart going on here. He led his team to five touchdowns in the Rose Bowl, threw for 98 more yards then Young did on 1 less completion, and threw the only touchdown pass of the day. The NFL, while always intrigued by players such as Vince Young, tend to be more interested in the classic type quarterback who can be developed into the standard issue NFL signal caller.
Young will need to relearn how to throw the football overhand before he fits that mold, and his excellent mobility shown in college will put him on the IR early in his career once he faces the faster and stronger NFL tacklers out in the open field.
Houston has indicated they are more interested in Bush then a quarterback, and with Reggie looking like a sure bet in the NFL, that pick is a no brainer for them. It should get interesting after that, though. What I have heard is that New Orleans wants Leinart, and the Titans are interested in Young to replace the oft-injured Steve McNair, but not to start him next year - probably the following year.