No need to add a separate Comet. I’ll simply mention the .50 cal in the specifications for the existing one. Thanks for pointing that out.
As for the SPAAG, I honestly don’t know. If it turns out to be fake, then they can simply leave it out. It wouldn’t be a major loss.
That truck also doesn’t look like it would have a particularly good field of fire against ground targets, but I’ll still mention it in the list below the tree.