gaara caught the 3rd raikage,2nd mizukage and his dad at the same time,and they were running towards him.
Where did you get that they were in a dessert?
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that isnt a dessert,that's a rocky terrain full of pillars,havent you sen onoki's rock techs all through out the war,it's obviously a rocky terrain,or did he make that giant golem from nowhere?,gaara's sand making abilities have affected the area as such that it seems like a dessert.
So what,a hawk will carry them in the air and dodge sand attacks from gaara in a dessert for 10 minutes without getting hit once? Gaara is a sensor as well,both in the ground and on the air,he found muu with no chakra signature at all,so finding the uchihas in his sand sphere wont really be too bad.
Madara's yasaka didnt hurt tsunade because of her SOH,she survived heavenly transfer as well,she healed instantly,that's not a basis for your argument,an arrow would even faze tsunade in that mode. Madara is on a completely different level than gaara and sasuke combined,his normal fire style trumps sasuke's itachi's together,saying his attack penetrated so sasuke's will penetrate is baseless,those arrows arent doing anything.