Would you rather your opponent have a wide open table on his opening shot or a table that requires breakout(s)?
Not necessarily. I've seen many players that can pocket like a bat out of hell, but have a hard time when they have to do something with the table. I also would rather get into a safety match with a better player than a shooting match.
Definitely don't want anyone facing an open table against me.
But if a player is stronger than you, he's stronger than you at everything, including safeties. The only thing my opponent likes more than an open rack, is ball in hand.
I'm not saying it's a bad option, I'm just saying it's only a good option if you make a ball.
If you're not making a ball you absolutely should abandon the soft break, control of the table + choice of groups is HUGE. Definitely more important than preventing a runout. Why? Because runouts are overrated and not as frequent as you think. In a safety battle, that APA6 will outsmart the APA4 almost every time. But with a wide open table, he is not gonna run out more than 1 in 10.