Both UPSC and CAT are good steps for the bright future. But, there is little deviation between them. If you got win in UPSC, you will have chance to deal with the people in the form of executing good deeds for the wellwish for them. In this direction, your thoughts to be given importance for the people not the money.
But, if you win in CAT, you will attach to reputed company and you work for the benefits of company. Here you give the importance to the business not else.
So, you decide with which your thoughts have to be coup up with.
I believe in a positive attitude. I like those who criticize me.