Hello Nikhil1986,
Leaving aside the semantics like 'Bathc Parity', etc, suggest learn to live & adapt to the changing situation/scenario as you gain experience.
If you recollect, 2010 was the year when the global recession was just receding & things were getting back to normal. Under those circumstances, MAYBE your company could handle only that package that was given to you THEN?
And things are far better this year which COULD have lead the company to revise the Campus Placement policies--so your junior got a better deal. Whether one agrees with it or not, that's reality.
All you can do now is what Pon suggested [...........approach your management for consideration............] OR what ukuk13 suggested [......look for a change......].
But also pl bear in mind that there's a downside if you implement Pon's suggestion--the possibility that your raising the issue COULD be treated as 'questioning the company policies after just year of service'. It would all depend on 'how' you raise the issue--if you raise it the way you raised in this Forum [sort of 'as a matter of right'], you would be inviting Trouble--with Capital T.
All the Best.
Rgds,
TS