Dan 7:13 I saw in the night visions, and, behold, one like the Son of man came with the clouds of heaven, and came to the Ancient of days, and they brought him near before him.
Dan 7:14 And there was given him dominion, and glory, and a kingdom, that ALL people, nations, and languages, should serve him: his dominion is an everlasting dominion, which shall not pass away, and his kingdom that which shall not be destroyed.
It's hard to spot...You gotta look close...
So do you see anything in your 'proof' text that might render your proof as not applicable to anything that happened in 70 AD ( or any time) in Jerusalem, or Rome, or New York City???
The difference of course being that Jesus predicted His "coming in clouds" against Jerusalem and the destruction of the temple in that day, to "this generation". He told His disciples "when you see Jerusalem surrounded by armies" that those would be the "days of vengeance". "And they will fall by the edge of the sword, and be led away captive into all nations." Not exactly descriptive of modern warfare. "Then they will see the Son of Man coming in a cloud with power and great glory." (Cf. 1 Tim. 3:16)
At the same time Jesus took His place as the King of the nations, and is bringing all things in subjection ("under His feet") so that "at the end" He will deliver up the kingdom to the Father (1 Cor. 15). That’s all Daniel 7:14 says in retrospect.