I still do not understand what the different understanding is. Some Pentecostal denominations teach that you have to speak in tongues in order to be saved. Is this what you are referring to? This is blatant false teaching because it is not biblical. When I say I am Pentecostal I mean I believe the gifts of the Spirit are for today and believe they are in operation. I mean nothing more. I am not lining myself up with denominations that use the term Pentecostal as part of their name and also refer to themselves as Pentecostal. Some of these are really off to the point that they are considered cults.
What is the different understanding that you are talking about? I have never heard of it! There is only one way to be born again. Please explain yourself.