Team B looks a lot stronger in my eyes.
Team A is looking to capitalize with a dominant pitching staff it looks like. However, I think too much of it hinges on guys who had or are poised to have a down season. Greinke I've never been a fan of. He has "great stuff" according to scouts and people who watch him but aside from his one Cy Young season, he is a 3.5 ERA guy who gets a lot of Ks. You can get someone like Scherzer 5 rounds later who gives you the same thing. Sabathia is poised for a down year with a crumbling Yankees team who I think will struggle to get to .500(thats coming from a Yankee fan)thus limiting his wins. Plus, he is out of shape and getting old...When will he break down? If his team is out of it, he may lose focus and could have an off year. Halladay and Haren are both injury risks(I don't think Haren actually wants to play baseball, just wants to show flashes of brilliance to get paid and sit out) and Shields I just don't like...You may win HRs with your hitting and sometimes SB but that's all you will contend for in a 5x5 league. In my eyes, you only have a chance at winning 6 categories with the other 4 being total losses(average, RBIs, Rs, SVs)
With Team B you are a hitting heavy but a little more well rounded. You look like you'll be able to dominate HRs, RBIs, and steals while competing in runs. Average might be a little rough but that can go either way each week. You can contend for all 5 categories on a weekly basis. Pitching wise you are a little weaker but not by much. Cliff Lee was a great snag to anchor the rotation and a solid Bumgarner makes your 1-2 here as good as your 1-2 on team A. I don't think Lincecum is going to have a bounce back season, but he's a nice gamble for an average pitching staff. I think that at least 1 of your RPs will end up being a solid closer for the year, maybe even 2(I am high on Balfour). You can contend with 4 of the 5 pitching categories with Ks being the only anomaly. I will assume that in a league like this with 8 SPs in your lineup that other teams will have 2 or 3 K specialists which you lack. Otherwise, you look to solidly contend for 9 out of the 10 categories with this team.
I posted recently if you look a below this one. Would like a response to mine