Theatrical version of ROTS exists. It’s just the HDTV with the missing wipe restored. Schorman did it.
I also think there are differences in the crawl timing. Not to mention that the Blu Ray is a higher quality source than the HDTV rip.
There’s no difference in the crawl timing between the Workprint bootleg, the DVD, the HDTV versions, the Blu Ray, the Streaming versions, or the Theatrical DTS CD audio for that matter. They are frame-for-frame identical. I’m not sure where you’re getting that idea.
For what it’s worth, the Blu Ray has more DNR than the HDTV master has.