I agree with you somewhat but his last two promos on the rock were amazing period
The promos he did a couple of weeks ago on Raw were good. He made valid points about The Rock. In fact, it summarizes how I felt when Rock came back in 2002 and said he'd never leave again, won the belt a month later, and left for another 6 months after Summerslam.
The promo he did last week, however, was pathetic. He said some random things for about a minute, and when he was done, he left the ring, without leaving the chance to the Rock retort. He wasn't even scheduled to be on RAW, and it shows. His presence felt like an afterthought.
That being said, it's not as if Rock's promo was that much better. His went on for like 15 minutes without getting to the point.