Robert looked at Dinohumon before asking him. 

"Wait a moment, how did you get injured?"

Robert brought up a good point. no one seemed to noticed the Kuwagamon until that explosion and Robert was the first one on the scene. From the way he was speaking no else seemed to be injured except the scrapes and scars him and Dorumon and Phase and Gilt suffered from being in the fight the longest and playing the deadliest game of dodgeball in human history, he didn't know much about Digimon history. So how did Dinohumon get injured? Robert wasn't omnipotent, he was just good at making guesses and observations and he quickly came to three conclusions as soon as he finished asking.

Dorumon looked back at the digicore, he had seen so many that he couldn distinguish the digicores from different types of Digimon. Kuwagamon was the steppingstone just the first road bump in their travels, there will be harder and harder enemies. He couldn't damage Kuwagamon this time, mostly due to a unlucky match up and to be honest all of the plans they had between them and Phase and his Digimon, were rather flawed and risky, it was surprising that Kiba came up with that plan, he was right about that inner strength. Then Dorumon saw that Robert was still holding on to his digivice, before Robert realized it he had it in his hands and put it back in his pocket. Though it wasn't going to be enough, it was only going to get harder from here. This Digimon was a just a champion and not a member of the army... There are Digimon that will be far stronger than it, smarter than it, and at a much higher level. Dorumon's mind flashed to the Big Death Stars, The Three Gods of Destruction, and the strongest out of all of them Tactimon. Doru remembered what Robert shared with him. Yeah it wasn't impossible, but he was naive enough to believe it going to be easy, no it was going to be difficult, very difficult. Dorumon's thoughts were interrupted once again by Robert asking what happened to Dinohumon. Well from looking at it one of three things happened. One, he and Robert wasn't the the first ones on the scene and he engaged Kuwagamon before them. Two there was another troublemaker on the scene and he dealt with that. To Dorumon which felt even more guilt if another got into the castle due to him. Three... Dorumon looked at the crumbling wall, the last thing that could have happened is that he hit Dinohumon with that last overkill attack. Well, if he started talking about an oversized cannonball that flew at him out of nowhere, that was another thing to apologize for.