Double overhand deadlift is merely 350 lbs 170 lbs bodyweight and a weighted chin up of 80 lbs. Pretty close to my 1 rep maxes. Do not think those are impressive numbers in the lifts...
Stronger Than Most
I spent about two year in Judo. What I found was that very few of those in Judo did much of any Maximum Strength or Power Training.
With that said, you most likely are stronger than most.
My opinion is you do not need to be stronger than the other guy but you need to be strong enough not to be overpowered.
Being Stronger
In Judo, as most sports, "Technique is everything", as per Dr Tom McLaughlin (PhD Exercise Biomechanics).
However, being stronger ensures that you will not be overpowered.
As a Powerlifter who was a lowly Yellow Belt. I was able to get some Brown Belts in an arm bar or chock and tap out. I make a couple of couple of Black Belts lives miserable on the mat before I finally tapped out.
The moral to that story is there is a definite advantage to being stronger.
Power
Judo, as most sports, is a Power Sport.
The foundation of Power is built on Strength. However, as Alan noted, at some point, the focus on only developing Maximum Strength, increasing your 1 Repetition Max in a movement, is counterproductive.
"Lifting Weights Makes You Slower"
There is some validity to this.
Maximum Strength Training causes a shift in the "Super" Fast Type IIb/x Muscle Fiber to the Fast Type IIa Muscle Fiber; Maximum Strength increases while Power and Speed decrease.
Fast Type IIb/x Muscle Fiber are developed with Explosive Movements: Olympic Movements, fairly heavy Kettlebell Swings, etc. In this case, Fast Type IIa Muscle Fiber are converted to "Super" Fast Type iib/x Muscle Fiber.
Maintaining or increasing Maximum Strength and Power is a juggling act.
Judo is reliant on Power. Thus, a well written program for Judo should center around...
Conjugate Training
That means combining different types of Strength Training into the same Program.
In this case, Maximum Strength and Power Training needs to be trained together. One method is to devote one day to Maximum Strength Training and another day to Power Training.
The Poster Children For Conjugate Training
Olympic Lifter are the poster children for Conjugate Training.
Maximum Strength Training with Front Squats, Back Squats, Pressing, etc.
The Olympic Lifts develop their Power.
Judo Is A Pulling Movement
Judo revolves around Pulling Movements; exercises such as the Deadlifts and Chins in your program. These movement primarily develop Maximum Strength; they provide some carry over to Power.
To maximize your Power Development you should consider Olympic Movement (Hi Pull Cleans and Snatches) and fairly heavy Kettlebell Swings.
Strength x Speed = POWER
"Since strength and speed are components of power, increasing one while neglecting the other limits total power development. Unfortunately, many players focus on strength because they are familiar with this traditional and well-established mode of training. Because strength and speed have a multiplicative impact on power, athletes can make greater gains if they develop both components. For example, if an arbitrary strength score for an athlete was 2, and the athlete's arbitrary speed score also was 2, the hypothetical power rating would be:
2 x 2 = 4
Doubling strength without altering speed would double power:
4 x 2 = 8
If the same athlete made only a 50 percent gain in strength and an equal gain in speed, the power rating would be:
3 x 3 = 9"
(Brittenham, 1997) Source:
Plyometric bench training for 1rm increases