I checked to see what was considered an "okay" grid. Confused as to what you're referencing to when relating it as okay though. If it's for a newer player, sure. Or before FLBs came out, could be considered an okay grid back then, sure. But AQ5s did come out after FLBs came out after all. And for vet standards currently, I would not consider that as an "okay" grid when there isn't a single FLB in it. I mean that grid has gotten 5 free FLBs right now at the very least (6 or more for those that were there even earlier I guess).
For people that keep up with FLBs in terms of updating grids and all that, AQ5s seem like pretty trivial content. But ye, if ppl are still rocking SR disaster wpns, then I could see how they might be struggling to reach damage checks. ¯\_(ツ)_/¯