I would LOVE to see Bumi CREATE THE ABILITY TO METAL-BEND at the young age of 12, or single-handedly own the Dai Li (Direct descendants of the earthbending warriors who were physically trained by AVATAR KYOSHI), or sense where rocks/boulders are going to go in the air, before his own opponents do, or cover himself in an Iron Man/Colossus-like outfit of pure metal, after presumably a few months of even knowing he is capable of controlling the material. The skills of an Earthbender doesn't lye in the sheer strength of their muscles like everyone would think it does. He can lift all the tons he wants, that isn't really going to be a big help in this battle, especially considering we don't even know if Toph is capable of lifting that exact same amount... Yeah it's unlikely, but it's sure as hell not impossible. And Fire and Earth are two completely different elements, both in their universe, and, in realistic science/our universe. They have two completely different original benders. Knowing how the Dragons conjure up fire COULD be completely different to studying how Badgermoles control the earth. They are two different creatures in two different civilizations and are the original benders of two different elements. Just because the original art of Firebending isn't the most powerful technique for Firebenders, doesn't mean we can say the same for the original art of Earthbending not being the most powerful technique for Earthbenders. Knowing the original source of either of them could mean two different things, and although I am probably completely and utterly wrong on that part lol, we don't know for sure what it means, and we could find out in the next Avatar (if there is one). The difference is, we don't know if Toph is capable of bending that amount of Earth, in a similar fashion to not knowing/seeing how fast Azula can create lightning, so we are not really in the position to say whether or not Toph can bend that amount, because she very well could be capable of it, especially considering it's metal properties. But like we know Jeong Jeong can't make lightning or blue fire to compete with Azula, or, like we know Pakku can't heal, plant-bend OR blood-bend to compete with Katara, we also know Bumi can't metal-bend to compete with Toph, and like Electricity/Lightning for Fire or Blood and Healing for Water, Metal is the ultimate thing for Earth, and if there was any metal around, I think Bumi would lose. Well, I think he would lose even if there WASN'T metal around, Toph sees with earthbending, it's not just some Martial Art to her like it is to others, it's he way of communicating with the world. Although I love Bumi, I do, and will always, think Toph is his superior. If she isn't, then like Katara/Pakku or Azula/Ozai she will surpass him GREATLY in years to come, and that's a fact.
Experience? Katara has 5+ decades less experience than Hama (I don't care how powerful people think she is, she CREATED BLOOD-BENDING and discovered Plantbending by herself) and she deafeated her (and Katara knows every single form of Waterbending, Pakku cannot compete with that), Zuko is a couple decades less experienced than Zhao and he beat him when he wasn't even that good of a Firebender, Toph beat about 10 guys, both individually and at the same time, and they all had to have been about 2-4 decades older than her (please note that she did this with EASE), Toph also beat the Dai Li, all men who are decades older than she is (who's style originates from something an AVATAR teached them), Azula ownes Jeong Jeong in my, Axrendale's and isabelwhatx's opinion, and he has been a master/legend since before she was born and had experience in the army (is also the only known person to walk away from the army and LIVE)... Experience doesn't really mean anything in these particular situations, it's the sheer, cunning intelligence that will decide the outcome of all three of these fantastic battles.
I love this debate, you guys make BRILLIANT points, it's VERY fun!