49ers' DC prepares for Russell Wilson

Here are some notes from the media session held by San Francisco 49ers defensive coordinator Vic Fangio on Thursday:

A lot of NFL teams dinged Seattle quarterback Russell Wilson for being 5-foot-11. He wasn’t drafted until the third round because of his height -- despite possessing all the other high-caliber NFL quarterbacking qualities. However, Fangio doesn't think Wilson’s stature is a detriment.

“His lack of height actually helps him, I think, in that he’s less of a target to get to,” Fangio said. “He’s a tough assignment.”

Fangio said San Francisco third-stringer B.J. Daniels can help this week as a scout-team quarterback. Fangio said Daniels' quickness and size are similar to Wilson, though the rookie is not as fast as Wilson. Still, Fangio said, Daniels offers the 49ers’ defense a “good look.”

Fangio’s assessment of No. 3 cornerback Nnamdi Asomugha against Green Bay on Sunday: “He had some good plays. He had some big plays for us on a couple third downs. He also missed a tackle or two there that hurt us. So, he had some good and some bad and we need to eliminate the missed tackles.”

The 49ers had seven missed tackles, a high number.

Asked whether rookie linebacker Corey Lemonier is ready to play, Fangio said he was and could spell the starters in Seattle.

Fangio said defensive linemen Ray McDonald and Justin Smith probably rotated out more than usual against Green Bay because of a combination of the warm weather and the fact that San Francisco was playing its nickel defense extensively.