If you look at the past world series champions, most teams aren't typically home run hitting teams, and they certainly don't strike out a lot
2015 - Kansas , 30th in strikeouts , 24th in home runs
2014 - San Fran , 17th in strikeouts , 17th in home runs
2013 - Boston , Boston 8th in strikeouts , 6th in home runs
2012 - San Fran , 26th in strikeouts , 30th in home runs
2011 - St.Louis , 29th in strikeouts , 13th in home runs
2010 - San Fran , 19th in strikeouts , 11th in home runs
2009 - Yankees , 27th in strikeouts , 1st in home runs
2008 - Phillies , 12th in strikeouts , 2nd in homeruns
2007 - Boston , 21st in strikeouts , 18th in homeruns
2006 - St.Louis , 25th in strikeouts , 12th in homeruns
Now if you compare that to the Blue Jays
2016 - Blue Jays , 8th in strikeouts , 4th in home runs
You'll notice a pattern among winning teams. They don't usually strike out a lot and don't hit a lot of home runs. Now don't get me wrong, there's an exception to every rule but they're exceptions, not the rule. You can take a chance at slugging to a world series, but its not something that happens often.