New Delhi:Australian speedster Brett Lee is in India once again as Brand Ambassador to Timex and he spoke exclusively to NDTV in Delhi and says Australia's tour of India later this year will be like an unoffical world championship. "Ashes has some tradition, history. However, India has been playing really well for the last two years under Sourav Ganguly. I feel they are perhaps closest (to us). So, in the present context this series can be rated as the unofficial world championship," Lee said. The Australian pacer lavishly praised the Indian batting line-up saying they were the most difficult to bowl in world cricket now. Lee's most recent ankle surgery meant that he's been out of action since March since the one dayers in Sri Lanka. The injury was apparently aggravated because of his pre-mature comeback in the series against India. He missed Australia's tour of India in 2001 because of injury and last year he missed the TVS Cup one day series, but now he's looking forward to coming back for some cricket when Australia tours in September this year. Shoaib Akhtar failed to stop the Indian juggernaut, but Brett Lee will be hoping that he can make a difference as the Australian team tries to conquer its final frontier.