On PES6 (360), when very bored, I decided to give the game a fair chance (with everybody singing it's praises) and played a Master League. After 20 games, three games had goals (two wins and a loss) and the rest were 0-0s (on "Top Player").
Whether I've got worse or what I don't know (on the PS2 on six-star I'd get something like 65% wins, 25% losses and 10% draws), but it's incredibly boring offline and I just don't see the enjoyment in a million one-off friendlies online. If they set up leagues or some kind of competition, great, but friendly after friendly just sends me to sleep.