Increase your deadlift number is very different to getting the benefit of the deadlift.
Not Necessarily
If the movement pattern engages the same muscles involved in the Deadlift, most of the beneifts will be essentially the same.
Based on Chase Hines results, his Zercher Method works for increasing Maximum Strength and will work for increasing musle mass.
Let take an example besides the deadlift: some people increase the number of chin/pull up with snatch or swing. But the muscle mass gains in the lats from swing or snatch is inferior compared to from chin up or pull up.
Different Type of Strength Training
The example provided amounts to comparing Apples are Oranges; they are not the same.
1) Power Training
Swings and Snatches are Power Training Movements.
2) Maximum Strength/Hypertrophy Training
Chins/Pull Ups increase Maximum Strength or Hypertrophy, dependent on how the Training Program is written and performed.
Swings/Snatches and Chin/Pull Ups are different tool for different jobs.
The key is to use the right tool for the right job, for optimal results.
Conjugate Training
Anecdotal data (Westside Powerlifting Method) and Dr Michael Zourdos's Conjugate Training Research has demonstrated that one type of Strength Training enhance the others.
let say someone lacks leg strength, and this person hits the leg press hard. A few months later his deadlift when up. Will you conclude that the leg press can replace the deadlift?
The Leg Press
The Leg Press is more benefical for the Deadlift than the Squat.
1) Conventional Deadlift
Research show that in this movement, the muscle firing sequence is Back > Legs > Back.
The back breaks the weight off the floor with most Conventional Deadlifters, with strong backs.
Then Leg Drive kick in. It is a "Bang-Bang" sequence that occurs so quick that most individual don't see it.
Thus, if a Lack of Leg Strength is the issue, the Leg Press, as well as other Quad Exercise are effective; such as Front Squats and High Bar Quarter Squat in a Power Rack.
2) Sumo Deadlift
Research show the muscle firing sequence is Legs > Back.
The legs initiate breaking the weight off the floor, with some assistance from the back.
Leg Pressing, if possible with a wide stance platform or Wide Quarter Squat in a Power Rack, are vital Auxiliary Exercises for Sumo Deadlifters.
Summary
Deadlift Auxiliary Exercise that involve the same muscles as the Deadlift and have a similar Strength Curve will increase Maimum Strength as well as provide a simiar benefit/training effect.
That means similar muscle gains will occur, providing a well written Hypertrophy Training Program is written and performed.