We can not perform all the required testing using low level recording, specially in the case when we need to modify or do some changes in the script, i feel that would be difficult. To support objects on different platform QTP requires add-in for the platform. You can use Low level recording when QTP is unable to record on an Object or the environement is supported. Moreover it is preferreable to use when exact mouse and keyboard operations are important in your test.
hope this is clear now.
hope this is clear now.