Can I interject with something? At work our urinals are much too close together, and quite frankly have insufficient barriers between them. You'd think this would have been standardized by now, but that's something for another day.
My point here was: there is simply no relationship between piss throughput and the outward appearance of a man. I don't think it's really even related to dick size, either. I have a fairly large dick and I thought I had a powerful stream, but God motherfucking damn this tiny Asian dude next to me rips open a fucking firehose. I don't know how he didn't start flying backwards. Given the insufficient barriers I was a little concerned that it might form a mist cloud like at the bottom of a waterfall and drift in my direction.
Same thing in reverse with a gigantic 6'5" motherfucker who probably has a dick the size of a Pringles can. It's like a selectable garden hose sprayer with the setting on "light mist". What the fuck.