Given the opportunity I always attack first. Why do I do that? So I can give them an advantage? No.
I do that so I can set as difficult of a task as I can possible make for them to be able to match or surpass my score. I frequently underman teams I can beat with less 99% of the time, even if a full team gives 100% certainty. With the example of Geos, I don’t know anyone that would want to full team them considering undermanning them is rather straightforward. The risk of undermanning teams is rewarded with extra banners, so it’s nearly always worth it