Steve might be Tony’s soulmate/lover/teammate but Tony will always be Rhodey’s little brother and Tony’s best friend. Rhodey spent 3 months combing that damn desert for his little brother’s ass….3 freaking months. Rhodey’s been there for Tony through drunken escapades, girlfriends who shot him and then accused him of abuse and countless nightmares and tears. He’s seen Tony through the grieving of his parents death, through the aftermath of Stane’s death. He’s been with Tony when Tony’s been his best and his worst and no Captain, be he a childhood hero or not, is ever going to take his place.