Actually,new doesn't always culminate into being better.The fact is,we basically have got nothing substantial to go with,when it comes to the capabilities and technical aspects of the Armata........true that it is revolutionary design,but it's also untested.On the other hand,we have got the venerable Leopard 2,which has for long been regarded as the benchmark against which, modern MBT designes are judged!!And calling the Leopard 2 old would be doing a great injustice to this otherwise great machine,since it has seen many improvements over the years of its service life,there are many blocks of it and the latest A7 variant just came out a year ago!!The A7 is practically a new beast altogether when you compare it to the A4 or earlier versions!!So,I won't be so quick to write the Leopard 2 off as technologically inferior in a whim!!
And by the way,there is virtually zero chances of Armata coming to India,not under this government,especially if we are to take the MMRCA saga as an example and also,that the Arjun MkII is showing a lot of promises lately!!