We can play this game all day long. I will win every single time, so let's do it. First of all, do DH's play defense? I mean there is a spot in the batting order now that allows a "bat" to be in the LU and not effect your defense, ordid they change the rules today?
More chances of a bad pitch that results in a hit (or HR), resulting in more runs given up...a big bat, means one swing, can alleviate this.
Starters getting tired earlier in the game, resulting in more chances of a bad pitch being thrown, resulting in more chances of hits (or HRs) given up, resulting in more runs given up.
Yes, giving up more runs now is almost a death sentence for this team, but another legit bat or two added to the lineup can alleviate this too. Give up 5? No problem, we'll score 6 or 7 or more. or another way to look at it is...more Bats added to the LU can make this a moot point by scoring a lot of runs early enough that the Pitchers don't have to throw as many pitches(they can get pulled early).
Point being, I can counter every one of these by adding more quality(big) bats. Score more runs, less stress/pitches etc on the staff. It's really that simple.