1. A major procurement has to be worked out backward from two principal factors, beside others:
2. I have doubts this list has been worked out in that manner. Perhaps kickbacks to the political cronies of the Govt have been the major factor. In BD the military high command isn't very high as in Pakistan. Political pressure on the BD military high command is pretty pronounced. I heard rumors that the Indian DA at Dhaka was first presented the list for vetting.
If you hear just a rumour about our armed forces purchasing of weapons, better you keep it within yourself. Otherwise, post a link to prove your point. You can also come up with a valid argument. But spreading a gossip about our military purchases only harm the country.