@Yusuke52: If you read the manga they appear very strong anyway. Like I said above the anime filled it out a lot and made them look weaker. From the manga we have basically 3 feats shown during that fight.
1) Nidaime creating a really powerful water wall with no water source near by. The wall was powerful enough to stop a kage level fire attack and shocked the anbu watching.
2) Hashirama creating a small forest and trapping Hiruzen.
3) Hashirama about to kill Hiruzen but Hiruzen is saved by Enma.