The MTC-LKO VB often arrives before time at LKO but is still not much preferred because the ICE travels at the same time. Sure it's an hour slower, but honestly, even if someone was splurging money, then traveling in 2A with a comfortable sleeping berth is way better than even executive class.
The ANVT-LJN DD is often filled at the last minute, along with LJN Tejas. This is due to both the uncomfortable nature of the DD seats and the fact that it has bad timings [starts before 0500 hrs from LJN]...
more... and when I traveled, it was late by ~2+ hrs when reaching LJN from ANVT.