What does everyone think is a 'normal' or average lunge (knee scraping the floor) and a raw, below parallel back squat ratio?
Don't think there is a standard ratio, most would agree lunges don't have much carry over I think.
I think he means like if you can lunge 135 on your back, you can squat 3x that or whatever (just an example)
Consider who asked the question.
Why would such a ratio be relevant?
It's not relevant .
So what should be my seated unilateral calf raise with a 20 second squeeze and 20 second stretch to deadlift ratio be?
It should be 32.6950483965% of your deadlift.
Barbell lunge should be 70% of your squat max.
I've heard the back squat should be 100 pounds higher. Obviously these figures could be subject to change according to how much one squats.
Honestly I just made that up based on my own lifts. But it's something to shoot for either by increasing lunge weight or increasing squat weight.