I always compared PES and FIFA to Counter Strike and Call of Duty. Counter Strike takes years to even be good at it, while Call of Duty is fun to play, run around, spray your opponents and basically do whatever you please which lacks FUN and realism. Same with PES and FIFA. PES offers a learning curve where you really have to think while playing. FIFA is easy to pick up and younger kids love it. Over the years FIFA was able to get better especially with the gameplay. LOOKING at two games and the gameplay videos, you'd think FIFA plays more realistically and it DOES look more real and that is because of animations and the way players move, but you JUST DONT GET that satisfaction like you do when you play PES.
Speaking of realism SOWS (Sensible World Of Soccer) and 96/97 being the best ever is strongly considered to be the best football game ever made, even to this day. This game is listed as one of the best video games ever made and is in Hall of Fame with games such as Zelda, Final Fantasy etc... and this game wasn't based on graphics, or boots, or anything BUT THE GAMEPLAY. Sure you had 20 foot sliding tackles and lots of other stuff that cant ever happen in real life but the game of football should be ONLY based on one thing. That is GAMEPLAY. If KONAMI want to be on top of again and be untouchable all they have to do is STOP LISTENING to people who complain about graphics, boots and other small petty things and focus STRICTLY on gameplay.