But, how did that affect home runs? Were there more home runs down the lines, but fewer to LC-C-RC? It would be interesting if someone could do a sabermetric study (if the data was available). How many home runs would Ruth have hit if he played in modern stadiums?
In Ruth's time, balls which bounced into the stands were counted as HR, while they are ground-rule doubles today.
On the other hand, balls hit down the lines, which cleared the fence inside the foul poles (i.e., fair), but then hooked and physically landed in foul territory, were counted as foul balls.
There are estimated counts on both these figures (based on newspaper reports), but I've forgotten what they were. If you want to do a little investigating, you might want to try the website for Project Scoresheet.
There was a book about Ruth’s HRs, and a wiki entry:
http://en.wikipedia.org/wiki/The_Year_Babe_Ruth_Hit_104_Home_Runs
...n modern ballparks under modern rules, Ruth would have hit 104 home runs in 1921, 90 in some other seasons, and over 60 many times. The author’s research concludes that Ruth would have hit well over a thousand home runs in his career...