Thats your experience.

I take more time to brush in the shower since I spend a considerable amount of time just soaking in the shower before and after I cleanse. Instead of just sitting there letting the water relax me, which I do for more than half the shower, I brush. I have long hair so it takes me longer to wash it than most men. When im letting it rinse, I may brush then. What would be a 2 min brushing out the shower is a 4min brushing in the shower for me. And because Im in the shower, i can brush more vigorously without worrying about getting toothpaste everywhere. You can use better angles that dont require you to go slower or less fervently due to cleanliness. If you dont, thats fine.
My comment wasn't about your brushing habits, it was about mine.