It's not quite that simple. You'll need good pitching in a hitter's park or you'll exhaust your bullpen, and without good hitters you'll seldom score in a pitcher's park. Best bet is draft one you like and can have fun with. If you take Colorado, remember you'll be facing lots of hitters so you'll need more pitchers, or pitchers who are workhorses. If you have a pitcher's park, you'll have lots of low scoring close games at home. If you like 9-6 games better than 3-2 games, take a park that will give them to you. Of course if you have a rotation of stars you'll get those pitcher's duels most anywhere. I chose Fenway because I like going there, and have built my team far differently than Dan Duquette. Hope this helps.