kakashi zero diff. all the power in the world doesnt mean he has obito's other eye which is the only known counter to it. remember kakashi was prepared to warp mazo's head and 5 bijuudamas. giving kakashi samehada means he has the chakra necessary.
Living Hashirama was stated to make the Five Kage's combined efforts look like nothing, twice.
once actually and then madara started praising their abilities and finally saying they deserved their kage titles. madara seemed to be winning vs hashirama as well anyway. he probably lost to luck. also its easy to be cocky knowing your immortal and the kages arent.
ashirama has Wood Clones, that takes EMS to tell the difference between them and him (as stated by Edo Madara himself). Kakashi ends up using Kamui on a clone, then is killed.
hashirama is nowhere near fast enough nor does he have intel enough to make that decision. i havent seen a single wood clone in the entire VOTE fight. therefore it is not his fighting style to open with clones. but it IS kakashis fighting style to
Hashirama wins. He can spam Wood Dragon, Flower world, Deep forest emerge and the Wood God he used against the Kyuubi.\
and wont. because his head and then body will be in another dimension. also spamming moves just makes great shark bullet stronger