On topic, as of Tomahawk v/s Nirbhay v/s Babur, I would rate them as follows, based on their tech & capability -
1) Tomahawk Block-IV
2) Nirbhay
3) Babur
Tomahawk is a highly evolved missile with so many different launch platforms & variants, and is supported by the world's
largest array of reconnaissance & mapping satellites - no other country can feed so much info into a missile than US.
Telemetry & navigation for Tom is the most reliable among all three and this is what really matters for such cruise missiles.
The Block-IV includes SAR seeker for tracking and hitting moving targets (i.e. ships), although they are rarely, if ever, used
in that role.
Nirbhay is the second-best in most things among the three here. Although only the GLCM is tested so far, the array of
launch platforms outlined for this missile is only next to the Tom. In terms of navigation, the Nirb has the advantage of using
a larger number of sources for increased accuracy (GPS, GLONASS, IRNSS - with the latter being further boosted by GAGAN
augmentation in most cases, again the only other CM here after Tom to have augmented navigation system). The Nirb
is supported by an established (and growing) fleet of reconnaissance & various other types of comms, SIGINT/ELINT space
assets. Again, it's the only other one after Tom Block-IV to have a SAR seeker and therefore the ability to hit large moving
targets. As per sources, the NIrbhay's 370daN ( 838lbf / 380kgf ) turbofan engine is slightly more powerful than the 700lbf
engine used by the Tomahawk, although the other specs of the engine are likely to be behind.
Even visually, Nirb has the most aesthetic development in terms of airframe design after Tom, an example would be the conformal inlet which is shared by both Block-IV Tomahawk & Nirbhay.
Babur comes up last in almost everything except for being already operational/starting out first, where it is second. The
weakest part of the whole setup of Babur, quite obviously, is the navigation and it's reliability & availability. All space-based
navigational support for Babur (without which it wouldn't even compare with the missiles as Tom, Nirb or CJ-10) are
provided by China, including the inputs from the Beidou navigation system - who's use is not guaranteed in times of
nuclear conflict. It's also the only one here without the availability of augmented navigation - atleast for the foreseeable future.
Very little details are available (for me) about the Babur's electronics, propulsion etc. Although what is available states that
it's also the only one here without a SAR seeker at present. Airframe-wise it's also the least developed, despite being around
for the longest time after Tomahawk (in this list). Anyone who wants to fill us in about Babur's engine & other stuff may
please go ahead because I'm interested to know.