I'm rolling with Buk on this one, firstly Mike's main character flaw is that he is afraid of Molesters/Homosexuals. For a kid that became so murderous why was it so hard for him to kill Bugs father himself? The kid had deep rooted homosexual/Molestation conflicts, we all can't deny that. The writers put it out there for all of us to see. They then leave us hanging with the impression that Mike embodies Omar after Omar's death & we all agree about that.
Why not have Mike come in and rob the rim store alone? Why was Mike sounding just like Omar when he spoke to Vinson? Why was Dukie looking like a jealous bitch while Mike smashed the chick? It's all there in front of us not too sure why y'all denying it.
Mike never killed anybody at that point and like Bug's dad said, he wasn't strong enough yet to take him out. Chris said that in order for Michael to become a hitman, the first person he had to kill was somebody he didn't know. Mike didn't kill anybody until after Chris killed Bug's dad. I'm sure if Chris hadn't have killed him but taught Mike how to kill, Mike would've killed Bug's dad eventually.
If Mike would've robbed Vinson by himself, he probably would've got lit up. Omar didn't rob by himself until he had the respect and fear of the streets, plus he knew specifically when to rob people. Kenard didn't respect him or fear him and that's why Omar got popped the day he rolled by himself and didn't have nobody watching his back when he was already gimpy from breaking a leg.
Vinson didn't respect or fear Michael because he was a youngin. Vinson thought Mike was just some little boy who was running wild with a shotgun he found. But after getting shot by him, he now understands that when Mike comes, to give him what he wants or risk getting a limb shot off.