All this PTW I do not get. Sure with the new clipper mk2 you get more cargo space, but it will boil down to how much time do you have to play. You may haul more but have less time to play. You may play more, but listen to music as well and do other things as well. So tons per hour are less then someone that hauls less per trip but is is more diligent and not being distracted (and makes more trips per hours). So in the end the one who can haul less then the Panther MK2, can actually deliver more in that same hour time frame. As for play to win again I use the Imperial Cutter as my example, which requires the rank of Duke to even purchase (at 600 million credits before upgrades). So to get Duke you need to earn it playing the game so not everyone can have access to it, and so I have a advantage over those that never worried about gaining ranks for the Empire. So no Imperial Cutter and 784 tons of cargo space as I use. Not to mention it is a beautiful looking ship but handles like a whale. I love it none the less originally outfitted for mining but reequipped and stripped down for the community goal.
In any event what it boils down to is play time and a ship that can haul a lot of cargo, not necessarily the most, but the people who can play longer and enjoy hauling. Otherwise I can't see someone hauling 211,200 tons (currently) the lowest of the top 10 and a high of (currently) 342,700 tons.
To make the top 25% currently requires only 16,833 tons of cargo (a far cry from 211,200 tones for the top 10), easily doable by many cargo ships buyable in the game. If you want to make the top 10 you would need to be a dedicated player who enjoys hauling cargo and have a lot of time to make that top 10. The ship isn't the reason (it may help), but not the only reason. Play time > then hauling capacity. Just enjoy the game and if you feel that the MK2 is the only way to make the top 10, I think you are mistaken. Play time far out weighs cargo capacity in the long run, having both would be the winning combination, but even without the MK2, they would still make the top 10 if not the top spot by sheer play time and dedication.
I would be interested if anyone in the top 10 will post what ship they use and those closing in on the top 10 which they also use. For me top 25% is all I need. I made it on a Friday, Saturday (I only played form noon till 5PM )and a few hours on Sunday before leaving for a BBQ with my wife in the afternoon. It didn't take all that long honestly and I was doing other things during that time and not constantly playing.