No!..... 6.5t is total load out including 2t internal. Internal fuel is 6.5t@Annaa edited my post (surprise surprise).
1.37, 1.29 & 1.18 respectively. Ignore the 1st one tho... Mark2 will definitely have to carry atleast 6ton fuel for its more powerful engines, so its loaded weight would be between 18-19t.
For Mark1, I have come up with a calculation.
We know AMCA's empty weight =12t... external load = 6.5t... internal bay capacity = 2t... MTOW = ±25t... So internal fuel should be 25–(12+6.5+2) = 4.5t
So, the likely T/W value of AMCA Mark1 is 1.19!