There is no best tribe ever lol. Each world does its own thing, with different settings and players. Depends on what you view as being the best. Noone has played on every world so they frankly have no idea the true level of people in most of the tribes talked about.
Is it how fast the world ended? What if its packet or coin. Everyone knows coin worlds are faster at nobling, not from skill but price. What was the packet begining cost? Lower, faster the world goes. Setting truely do matter lol.
Is it age? Face it after the first 20 worlds tw dropped in talent level. Both in skill per world as well as people just heading to another if things got even remotely hard. Tw started opeining up worlds faster then gas stations, so each world got more and more deluted. I really laugh hearing w40- on up has the best. Best of what? The leftovers hehehe.
Is it stats? Lol anyone doing stats must truely be out there. Stats depend on time factor the world lasted(which if its longer id say good luck saying your that great), how good your vs tribes where on the world(noobs are easy to kill), world settings(i can out town you on a coin world vs packet, many factors that fluff stats.
Is it politics? Why all this huff and puff about did they merge did they not. Last I looked this was a game. The winning of said game is to be the last tribe on said world. If you dont think politics are not a key issue in playing them goodness knows you never duked. Its about all you have time for if your any good at it. Funny I see no actually mention of the tribes leadership in many posts. Its why tribes actually do much.
There is no I'm the best tribe. Everyone points and says we where great only because we where on that world. If there was such a thing then there would be tribes listed as winning multi worlds, instead you get premade doomed tribes. If TW really wanted a good game, they would make one world much like they did w50. let they players decide the settings. Then offer a truely decent prize. A world they boast if won would be called the 'best' tribe. Make it to where the true talent wants to go to win and will stay to win. A tag maybe for winning it. Something, its not to hard to do. A fun way would be taking each winning tribe tag up to that point and those would be the only tribes on that world that could be joined. Many ideas. But thats the only way I know of to say your the best, to prove it.