The percentages for each main lift are the same but you are to perform AMAP (as many as possible) in the last set. In order to make progress in the wave, it is necessary to perform MORE reps than the standard. If you only meet the minimum requirements, then the working max stays the same in the next wave.
I am looking forward to beginning Week 4 - Deload later today. Now is the time to recover and prepare to hit it again hard next week for the 8s Wave!