FIFA and PES are like Batman and The Joker, their entire existence defined by the presence of the other. You can't play PES without talking about FIFA's licenses, and you can't play FIFA without talking about PES' gameplay, because those things are as much a result of targeting the competitor's weaknesses as their own inherent strengths.
If Football—that is, the American National Football League football—used the same naming scheme as "Dungeons & Dragons," we'd call it "Beer Commercials & Cheerleaders." Like dungeons and dragons, beer commercials and cheerleaders are two things that not everyone likes. They are also, however, not The Point of their respective games.