This is jut fun!!
Hashirama was able to beat Madara Uchiha and the Kyuubi at the same time.
Tell me one feat better than that, that Garra has done. He was chosen as commander because he was the most logical choice out of 5 people.
Hashirama was considered the strongest of his time by The current most powerful man (Madara).
Garra's main ability is to Move sand.
His strategy usually being that he will constrict and crush his opponents.
He can use sand around an enemy to grab them often surprising them.
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This is his main way of attacking and strategy.
He also has been considered one of the best people when it comes to defense. Which can be beat by Speed attacks or overwhelming force.
He has sand clones that are Easily beat and are made for distraction.
Hashirama has Mokuton
Which is used to change the battleground, Create forests, Attack head on with powerful force.
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He also can use it to make clones that are indistinguishable unless you have advanced Dojutsu (EMS,Rinnegan)
These clones all have the same capabilities as the original and are much more durable than Shadow clones.
He also Has control of the battleground being able to move land and build forests in an instant. He also has the flower world which has pollen that can put people to sleep.
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Now Garra can fly but he has no sensing abilities that will help him distinguish the difference between clone and Hashirama. And with the battlefield changed into The flower world how will he even find him? The third eye is good but it can not distinguish between what is clone and not.
Garra has much less chakra now that he no longer is a jinchiriki
And has shown exhaustion after only a few fights with 2 Kage.
Hashirama has The body of a Senju which means huge Chakra reserves and a strong life force. He also can Heal on command.
Garra's main way of beating an opponent is to suffocate or crush them.
Hashirama's ability to grow mokuton from his body and heal from injury makes both of these attacks methods useless. If Garra were to capture him he can simply burst out of the sand with the mokuton from his body to separate the sand. Also his healing will allow him to keep from being killed by any small attacks garra might give off.
Hashirama also has BOD which is easy to get off when near an opponent and Garra has never shown to be able to force quit a powerful Genjutsu.
And you guys can say that Garra can drown a forest but Hashirama's Tree's were much larger than any average tree you guys have been talking about.
He can create an entire forest more than once whith massive chakra reserves Whil Garra tires after a little while of Fighting and with Hashirama's abilities to change the battlefield into something dangerous for his opponent Garra will need to use a lot of Sand to block and defend against Hashirama's attacks and he will need to use massive sand waves to counter Nativity of flowering trees which is Hashirama's most basic attack and even then a sand wave will be near useless against it. When you shove a stick in the ground it pierces the ground easily right and the and will just travel around the trees and be divided and hard to pull together for a efficient attack.
And take in mind that Garra will not be just fighting Hashirama he will have to fight 5+ clones. Even Garra can not overcome those odds.
And even in hype and Feats Hashirama dominates Gaara.
He Bested Madara Uchiha and The Kyuubi at the same time.(feat)
He was considered a Fairy tale. Madara Has hyped him beyond belief saying not even the 5 Kage's combined were Equal to him(hype)
I'm sorry if you guys think Gaara would win but as soon as we see The Madara and Hashirama fight this will be a no brainer. You guys like to come up with stuff for no good reason just to argue about pointless things and Hashirama is considered to be more powerful than just about everyone.
Hashirama is beyond Gaara.