Ji Ning had been able to easily capture the Emperor-class golems because he had a high level of insight into the Dao. His Shadowless stance was completely unpredictable, while his Blood Drop stance was incredibly fast, making it hard for the golems to defend against them.
As for the silver men? Although they were strong and fast, their strikes were too direct and clumsy! Although these clumsy strikes were very forceful, it wasn't too hard to block them; at most, you would be knocked flying from the power. In a one-on-one fight, they might be able to capture an Emperor-class golem, but all three of them were working together and were being assisted by Ninedust and Ning. It was highly unlikely that any of them would be recaptured.
"I'm clearly stronger than him, but I'm unable to dominate him." The skinny silver man sent mentally, "Hurry over here. Surround him and kill him."
"Coming."
"Let's go." The other two silver men charged forwards as well.