Jaqcues Kallis or Sachin Tendulkar.Who will be more influential for their team in the middle order?

there is no comparison b/w these two bcz they both are pearl for their sides , and they have their own value , but for me sachin was more influential dan kallis in middle order in test and opening in ODI. but i m not saying k Kallis have no power he also have that power which evry team need in their middle order ><