Hashirama was so weak in this chapter dafuq?
He had been fighting with Madara for a long time already, which is not easy. He was tired from all that fighting and was clearly stabbed with a few control rods. When Madara returned to full power, he was able to use those control rods to make Hashirama stop moving.
Keep in mind: Since their last fight together, Madara has gotten MUCH MORE POWERFUL (Rinnegan, Wood release, etc) while Hashirama did not. We would expect Hashirama not to win this fight as easily as he did in the past.