To answer your questions about are all the different religions providing a path to the same thing - well that is where the discussion becomes interesting.
In a nutshell - Buddism is a philosophy with so many truth's within it about looking out for others. It' s ultimate 'point is enlightenment. Which is something you earn through practise.
Hindusim the ultimate goal is enlightenment which allows them to break free from the cycle of reincarnation. Earned through the practise of certain things.
Islam - the ultimate goal is paradise which is limited for a select few. Earned through the practise of the six pillars.
Christianity is the only one that says 'paradise is for all who accept Jesus Christ as Lord' - which is where you let go of being in charge of your own life and doing what you want when you want. It is about letting go to let God in - and so so many Christians explain that as like being born again or waking up or enlightenment. But its an enlightenment that you don't have to earn through practise but that you get through acceptance of Jesus Christ being God, of living as an example of what life in union with God looks like, and ultimately provides a bridge to life with God through his death and resurrection.
For me that is what marks Christianity out as different. It is not earned but is accepted- but of course there is overlap with other religions because they are looking to minimise the ego.
But they are not the same - they each are individually making a truth claim - and they can't all be true.
If in fact, any are true....Personally I do believe.