I believe my words were he's never put together a good full season. To me that means having some consistency.
He had half a good season last year. He missed the first 3 1/2 weeks; I don't remember why.. He was pretty good his first 3-4 starts, though always throwing a ton of pitches. He was very mediocre his next 5-6 starts. Then he turned it around and was fantastic from the last half of June through the end of August, showing us all what he could be. Once the calendar turned to September, he was terrible, culminating in a 2 inning postseason start against the Yankees in a game which could have sent the Sox onward in the playoffs.
Overall, his numbers were good last year. But they are an average of a very high highs and a very low lows. Any pitcher will have a bad game or two here and there. He had multiple bad months.
Yes, his relief numbers this year (3 games total) are incredible. But being an ace is not just numbers, it's a mentality. An ace wants the ball in the biggest moments. An ace doesn't fall apart when something bad happens behind him. Bello has never shown that he has that mentality.
Decorum prevents me from telling you what you can do with "you are foolish and you should not be posting here".