You may hold whatever opinion of Umar RA you want but how is that relevant to him being Caliph instead of Ali RA. That is what I need you to substantiate. About Umar RA rule during his reign you need to respond in the other thread that was related to it.
Your not making sense here, you are trying to say that Umar RA expansion of the Islamic empire was the reason Ali RA did not get the Caliphate after Abu Bakr RA.