Twist in the tale (tail)

I haven't got the PPO (Pre Placement Offer) from Google yet. The HRs said that I was through the Hiring Committee, but yet to go through the Compensation Committee and signing from Larry Page. This process takes some time, and around 1 out of 1000 applications get rejected after this. The reasons for that being low grades or the committee feeling that we haven't been tested enough.

Microsoft is coming on campus this Monday. So, technically speaking I am eligible to sit for it. But now I am confused, I don't want to mess someone else's chances, and ditch MS for Google (if I get it). Anyways I plan to give GRE and go for higher studies if I get into any of the top 10 universities.

"The most difficult phase of life is not when no one understands you; It is when you don't understand yourself"