u mad or what?? shinra tensei was a technique originally used by the sage of the six paths..and you are comparing it with a technique of a shinobi?? ofcourse shinra tensei would be more powerful..
control over one of reality's main governing forces, aka as gravity, or the ability to dismantle someone molecule by molecule... Gravity wins, almighty push and pull destroys dust release
You can do a lot more with shinra tensei than dust release. i mean come on rikudo sennin had the more of shinra tensei. that's saying something right there son.