To what exactly does the そういうこと in the final part refer to?
Does it refer to the previous utterance as a "whole" (which then links into the 互いに頑張ろう as the other character also said he was 凄い). If not, what does it refer to and how is it used?
Edit: If it would help you answer my question, it could be looked at as to what are the things that そういうこと can refer to in a conversation and how does one know which one the speaker is referring to. Plenty of times I've seen someone say something then use そういうことだから or そういうわけだから etc to refer to what they just said before they continue, or it could be used to refer to what the other person in the conversation said。How does one know which one it is?