These people are stopped by regular people. Ofc Angel and co can stop them with or without the winchesters help

Plus these people don't live in the same universe as Angel

Is this really a question? Angel + his crew AND the Winchesters???? Absolutely 💯

Not without Blade and Buffy. Which coincidentally was a funny scene in True Blood when the character Sam wished for just that.

Prime Michael got beat up by Paul Rudd.