I don't see how it would be obvious. There was no sarcastic or joking 'tone' in the question and a lot of people do actually like the series. There's absolutely nothing that implies it was anything other than a serious question.
Not even the fact that it's two entirely different games really makes a difference. I bought GTAV and Animal Crossing at the same time, and they're not exactly soul mates.
At this point, I could make a thread asking "Should I buy milk or peanut butter??"
"Why are you guys taking this seriously? I don't even like peanut butter, TROLLOLOLOLOLOL"
there is no way to get a non-biased answer on this. people who play ac, including myself, will always jump for nintendo games above cod. (and rightfully so, tbh)