TYPO3.Flow

If a CLI command method name contains uppercase characters, CLI arguments are not properly resolved because ReflectionService won't find the actual method if you don't call the command in the correct case.

A todo comment for CommandController::resolveCommandMethodName() already states

@todo Find exact case of command method!

To be in sync with the Web request handling, this shouldn't happen in the controller though, but in the CLI request:
Chaning

public function getControllerCommandName() {
    return $this->controllerCommandName;
}

public function getControllerCommandName() {
    $controllerObjectName = $this->getControllerObjectName();
    if ($controllerObjectName !== '' && ($this->controllerCommandName === strtolower($this->controllerCommandName)))  {
        $controllerClassName = $this->objectManager->getClassNameByObjectName($controllerObjectName);
        $commandMethodName = $this->controllerCommandName . 'Command';
        foreach (get_class_methods($controllerClassName) as $existingMethodName) {
            if (strtolower($existingMethodName) === strtolower($commandMethodName)) {
                $this->controllerCommandName = substr($existingMethodName, 0, -7);
                break;
            }
        }
    }
    return $this->controllerCommandName;
}

should do the trick, but I failed injecting the objectManager (for compile time commands)