12041: HWH-NJP: 566 Kms in 8 hours 15 minutes => 68.61 KMPH
12042: NJP-HWH: 566 Kms in 8 hours 5 minutes => 70.02 KMPH
12025: PUNE SC: 596 Kms in 8 hours 30 minutes => 70.12 KMPH
12026: SC PUNE: 596 Kms in 8 hours 25 minutes => 70.81 KMPH
So,...
more... neither of 12041/42 is able to beat any of the 12025/26. So, kindly verify you facts first before telling others to verify.
Also, as you said, you haven't heard of SC-PUNE shatabdi, I think that's why you must be thinking that 12041/42 as the fasted Diesel hauled shatabdi.
Atleast Now you know about this shatabdi right? Now update yourself and remember that PUNE SC SHatabdi is the fastest one!
Someone has truly said: Little knowledge is dangerous.
**PEACE**