The poll doesn't provide any horserace numbers or head to head match ups, only the favorable/unfavorable ratings of both Republican and Democratic hopefuls. Here are the results:

Democrats (Favorable/Unfavorable/Don't Know Enough About to Have an Opinion)
Clinton 43/38/19
Edwards 34/21/44
Gore 32/46/21
Obama 28/10/61
Kerry 22/48/29
Biden 9/14/77
Richardson 7/8/85
Dodd 4/9/86
Kucinich 4/11/85
Vilsack 4/4/92

Republicans (Favorable/Unfavorable/Don't Know Enough About to Have an Opinion)
Giuliani 41/22/36
McCain 39/20/41
Romney 5/10/85
Hagel 4/5/91
Brownback 3/6/90
Hunter 1/5/94

The only thing that jumps out at me is on the Republican side: I can't recall when I've seen McCain that close to Giuliani in the fav/unfav category. In the Washington Post poll from December, Giuliani's rating was 17 points higher than McCain (67 to 50). CBS breaks down each candidates favorability ratings by party. They are as follows:

Giuliani (Favorable/Unfavorable/Don't Know Enough About to Have an Opinion)
Republicans 63/9/28
Democrats 21/33/46
Independents 45/20/35

McCain (Favorable/Unfavorable/Don't Know Enough About to Have an Opinion)
Republicans 48/10/42
Democrats 25/29/46
Independents 46/19/36

As we've seen in the past, Rudy runs much better with Republicans than McCain. I think you can also get a sense of how the entire sample of the CBS skews when you see that Rudy beats McCain by 15 points among R's (63-48), trails by 4 points among Ds (21-24) and only 1 point among I's (45-46), but leads McCain by only 2 points overall (41-39).