It all depends on your goal. In high school, I was 155-160, and I maxed out at 375, w/ respectable deads and squats(thats all my coach made us do). I needed alot of raw power for the sports I was in. Now, I'm 185-190, and I never max out, because I never grew much when training like that, and I have a more bodybuilding type mindset. In order for me to grow, I need to switch up the reps, form, speed, weight etc, in order to get the most growth; not to mention I don't just do 1 exercise for chest. So, yeah 1.25-1.75 is good, but it's not a standard and it only matters if you use perfect form, as with any/every exercise.