Does Scott Walker Think Paul Ryan Is Overshadowing Mitt Romney?

On Charlie Sykes blog, he posted an excerpt from an interview with Governor Scott Walker:

Wisconsin Gov. Scott Walker told radio host Charlie Sykes on Friday that he is bewildered by the way things have gone since Ryan was picked.

I thought [picking Ryan] was a signal that this guy [Romney] was getting serious, he’s getting bold; it’s not necessarily even a frustration over the way Paul Ryan’s been used but rather in the larger context. I just haven’t seen that kind of passion I know Paul has transferred over to our nominee, and I think it’s a little bit of pushback from the folks in the national campaign. But I think for him to win, he’s gotta [do] that.

Walker added, They not only need to use [Ryan] out on the trail more effectively, they need to have more of him rub off on Mitt because I think Mitt thinks that way but he’s gotta be able to articulate that. … I think too many people are restraining him from telling [his vision].

I was actually a bit surprised that Walker spoke of this publicly. Although it has been quite obvious that Romney does not have the passion of Ryan, or a discernible plan for the economy, isn't Walker doing harm to the Romney campaign by pointing out those flaws in the Republican presidential candidate?

It is common wisdom that voters do not elect the candidate for vice president, they elect the candidate for president.

But when the presidential candidate continues to waffle, and is running away from his own past record, and then is overshadowed by the vice presidential candidate, as the one on the ticket who has the visions — I think that voters will be reluctant to vote for such a perceived weak presidential candidate.