Re: Stronghold Siege (PvP Event) 33% chance is what it is, a chance. While there may be some stronger players on one team, that is merely the luck of the draw. As for the bricks, you can buy as many as you want at a time, up to the maximum of 150 in your inventory. Teams do seem a bit lopsided, but that appears to be more because activity instead of player size. In general, the size of a player is not super important in this event. The event requires lots of activity to get more Yridine, and then using that in smart ways with your team.