Sendo noted that Ippo was weaker. Ippo dodging capability is compromised. Sendo trainer noted, it may because of accumulated damage that ruin Ippo senses.
Sendo also noted during previous training session, Ippo got stronger after retirement and now, he confirmed Ippo not only able to fully capable to dodge properly, ippo actually move better while still wearing his ankle weights.
Takamura wasn't wrong, he was weaker but now he is stronger.