As mentioned by many, WP is a different experience. The 24/7 military experience will be vastly different then ROTC at a traditional university. Life on active duty will not mirror the experience of either WP or ROTC, you will enter BOLC after commissioning and it will be a fresh start where you will be with those that have commissioned from WP, ROTC, and OCS. The biggest thing to remember is that commissioning through ROTC will never preclude you from becoming a great leader.