MI advanced to the title clash, slated to be held tomorrow, after a six-wicket win over Trinidad and Tobago here tonight.
"We know the conditions better as we have played more matches here," he said at the post-match presentation ceremony.
While Rajasthan have played all their games at their home ground in Jaipur, MI have already played two matches at the Kotla.
Mumbai Indians rode on Dwayne Smith's quick-fire half-century and his 90-run opening-wicket partnership with Sachin Tendulkar to book a final berth.
"They laid the foundation for our victory and I thought our bowlers also bowled very well. They fought back very well," Rohit said.
Chasing 154 to win, Smith fired a 38-ball 59 while Tendulkar played a fine cameo of a 31-ball 35, which also saw the batting great complete 50,000 runs in all forms of cricket, helping Mumbai finish at 157 for four and make their second summit clash appearance in the short history of the tournament.
T&T captain Denesh Ramdin felt his team was 15 runs short of what could have been a challenging total.
