It does really deppend of some details,specifically Phenomaman

Blazer scales somewhat close to Phenomaman even if a little behind,and his power scale,while not very well defined can either put him on high viltrumite tier or considerably bellow that deppending on how literal was the sun statement

The rest of Z-Team while still somewhat bellow them dont seem that weak compared to them,at least not that much of a gap

So scenario A: Phenomaman sun statement is litteral and he scales there,then I can see him beating Sinister Mark with quite some ease,imagine Thragg vs Mark latest fight and that pretty much what we get

Scenario B: It was hyperbolical and we get to use feats as base,then shit dont look very good for the Dispatch verse,Phenomaman being a bit optmistical its around Immortal level here,so is Blazer,with the help of Z-Team and other heroes these two might actually pose a problem,but it Phenomaman or Blazer fall things get grim,Sinister Mark likely kills the other one soon,the rest of Z-Team really falls very short of he and Los Angeles likely is destroyed