Board Thread:Naruto Discussions/@comment-32617252-20180330183206/@comment-7292165-20180406142743

I don't think it was ever stated or even mentioned that an Edo's physical prowess are weaker. We just know that they don't have the same power, being restricted to certain jutsus based on how much chakra they have access to. For example, Tobirama could not use the FTG, meaning it takes a lot more chakra than he was given. Hashirama could use Wood Release, but it seemed relatively small compared to what he could have done. It seemed that the two were only about 50% at the most.