For me I've noticed that it's a combination of things, first and foremost is I tend to lose
focus playing a lower rated player, especially if they are genuinely appropriately rated
an S/L 3.
Another thing I find myself doing is experimenting - doing things I wouldn't
otherwise do if I were playing a better player, taking stupid chances that I wouldn't take
because I'm reasonably certain I'll get another chance. It's not showing off or something
like that, it's more a chance to try something out in a game situation. If it doesn't work,
it's generally caused very little damage that I can likely recover from.
One of the big things I think is that much of a higher lever players game depends on the skill
of the opposition. If I play a 5, 6, or 7 and they break or I break dry, I can usually count on them
to run at least 4 or 5 balls. For me it's far easier to run out a table with less traffic.
If you're playing a 2 or 3 it's far more likely that they will make 1, maybe 2 or fewer balls, then
you're still dealing with all their traffic and a cluster or two.
In the APA you don't generally find actual pattern players. Many APA players live (or die) by the
adage that you think 2 or 3 balls ahead, so without the benefit of an advanced player that can play
patterns and set up working break-out plays, the clusters usually equal more innings.
I'll have matches where I play poorly, or a night when I might draw a 2 or 3 that is having a lights out night,
it happens, but the one thing I always try to emphasize is to know your opponent and prepare yourself for
the kind of match that you're likely to have. We'd all like to break and run every rack, but remember that
even if you win your games by 1 ball, you still win.