Well in response to your question. Take a look at Kenny Patterson. He started westside when he was 14. He's thick as a brick. And strong as shit.
The thing to consider is if you start out using westside, take some time to strengthen your core and learn the exercises. For the first few months you really should focus on your core. At the same time learn the exercises. Then just keep it basic.
i would start powerlifting with a program that uses Full range ROM and focuses on building up a base from which westside can build on.
I think this is really important for people who have limited experience with the 3 lifts and need some time coming to terms with the movements
westside will bulk you up. also remember there is more than one way to train. I also believe that westside will work for everybody.....If everybody moulded the program to suit their weak areas and body type etc. its not a cut and paste routine.
there have been many 600-700lb benchs 800+ deadlifts 900+ squats that have been forged by methods other than westside.
I know i am jumping backwards and forwards.....but its up to you to make up your own mind....westside works and so do other programs