her moves cant overpower his at all he can summon more in less time as he needs to do 1 seal and touch the ground to summon the equivalent of thisI've been reading some of the replies to some arguments and there are flaws in both sides.
Mei can ONLY use 3 elements; Earth, Water and Fire. She has 2 KG: lava release, which combines earth and fire and Acidic Mist, which combines water and fire. So far she is the only Naruto Universe character to have those techs. But it would also be inaccurate to assume that she only has those abilities. She could know some basic earth, water and fire techs.
Same goes for the Kazekage, who was shown only using gold sand. But it would be naive to assume he only has those skills.
Now based on what we've seen, Mei has more offensive moves than the Kazekage. What we've seen from her can easily overpower his. Thus, based on what we've seen, Mei wins this.
Also, one of the arguing parties was claiming that lava release was easy to dodge, because Karin "dodged it". Thing is, Karin didn't dodge it, because the attack was not AIMED at her. She just reacted to something that was close to her. Madara is another matter entirely, because of the sharingan. I hope this helps a little to settle some arguments.
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and she however has to do 6 hand seals and gather it in her mouth and relesase this much
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which as you can see takes longer to come and the amount is much smaller.