Your 1983 works up was pure fluke. Have a look if you can.
And Indian were always scared of fast bowling and ( still are , on seaming tracks ) never played well in limited overs. There were unlimited bouncers allowed mind you. I can't resist mentioning Imran and srikant.incident when he was given out.lbw and he was walking away complaining. Imran called him back.and bowled him on next ball. Such was Pakistan team and such was Indian team.
Now, there are many factors in why Indian team is better.
But previously , you guys had all short comings which Pakistan( or any weaker team) has now. Add more weaker bowling attack too
Indian team has picked up since 2007 when ipl started. Till Before that , they were rotten mango.
I say it with pun. But it's true.