Actually, "I guess" implies that this is your subjective opinion, which may or may not be true, it does not mean "100% confirmed" as you claim. I'm not even a native speaker and I know that.
Canadian English, British English and American English may have different dictionaries but they follow the same syntax and logic, so this is no place for mind games. The interpretation you're presenting is just wrong.
Canadian English, British English and American English may have different dictionaries but they follow the same syntax and logic, so this is no place for mind games. The interpretation you're presenting is just wrong.